Between September and November 2021, 5 snow leopards (Panthera uncia) and 1 lion (Panthera leo) were naturally infected with severe acute respiratory coronavirus 2 (SARS-CoV-2) and developed progressive respiratory disease that resulted in death. Severe acute respiratory syndrome coronavirus 2 sequencing identified the delta variant in all cases sequenced, which was the predominant human variant at that time. The time between initial clinical signs and death ranged from 3 to 45 days. Gross lesions in all 6 cats included nasal turbinate hyperemia with purulent discharge and marked pulmonary edema. Ulcerative tracheitis and bronchitis were noted in 4 cases. Histologically, there was necrotizing and ulcerative rhinotracheitis and bronchitis with fibrinocellular exudates and fibrinosuppurative to pyogranulomatous bronchopneumonia. The 4 cats that survived longer than 8 days had fungal abscesses. Concurrent bacteria were noted in 4 cases, including those with more acute disease courses. Severe acute respiratory syndrome coronavirus 2 was detected by in situ hybridization using probes against SARS-CoV-2 spike and nucleocapsid genes and by immunohistochemistry. Viral nucleic acid and protein were variably localized to mucosal and glandular epithelial cells, pneumocytes, macrophages, and fibrinocellular debris. Based on established criteria, SARS-CoV-2 was considered a contributing cause of death in all 6 cats. While mild clinical infections are more common, these findings suggest that some SARS-CoV-2 variants may cause more severe disease and that snow leopards may be more severely affected than other felids.

INTRODUCTION: Examining gender differences in youth tobacco use is important as it aligns tobacco control within the context of broader human development goals seeking to eliminate gender inequalities. In this study, we examined gender differences in adolescent use of cigarettes, smokeless tobacco, shisha, and e-cigarettes in Africa. METHODS: This was a cross-sectional study using data from the Global Youth Tobacco Survey. Our analytical sample comprised 56442 adolescents aged 13-15 years from 20 African countries. Weighted, country-specific prevalence estimates were computed overall and by gender. Adjusted prevalence ratios (APRs) were calculated in a multivariable Poisson regression model to examine whether correlates of tobacco use differed between boys and girls. RESULTS: Ever cigarette smoking prevalence was significantly higher among boys than girls in 16 of the 20 countries, but a significantly higher percentage of girls reported earlier age of cigarette smoking initiation than boys within pooled analysis. Some of the largest gender differences in current cigarette smoking were seen in Algeria (12.2% vs 0.8%, boys and girls, respectively), Mauritius (21.2% vs 6.6%), and Madagascar (15.0% vs 4.1%). Current use of e-cigarettes, shisha, and smokeless tobacco was generally comparable between boys and girls where data existed. Among girls, higher levels of reported exposure to tobacco advertisement were positively associated with shisha smoking whereas perceived tobacco harm was inversely associated with current cigarette and shisha smoking. Among boys, perceived social acceptability of smoking at parties was associated with an increased likelihood of cigarette smoking (APR=2.27; 95% Cl: 1.20-4.30). CONCLUSIONS: The prevalence of cigarette smoking among boys was higher than that of girls in many countries. However, girls who smoke tend to start at an earlier age than boys. Differential gender patterns of cigarette and non-cigarette tobacco product use among youth may have implications for future disease burden. As the tobacco control landscape evolves, tobacco prevention efforts should focus on all tobacco products, not just cigarettes.

PURPOSE: This study aimed to investigate the association between self-reported depressive symptoms and oral diseases in US adults, including periodontitis, caries, missing teeth and untreated dental caries. DESIGN: This study was designed as a secondary data analysis of a cross-sectional survey. We conducted descriptive, multivariable logistic and Poisson regression analyses on weighted data. SETTING: US National Health and Nutrition Examination Survey 2009-2014 data. PARTICIPANTS: Individuals aged ≥30 years who completed a periodontal examination and depression screening (n=9799). RESULTS: 21.6% (28.9 million) of adults aged ≥30 years reported depressive symptoms, with a higher prevalence among females, current smokers and participants with lower income and education status. More than half of the adults with moderate depressive symptoms had periodontal diseases, and more than one-third had teeth with untreated dental caries. After adjusting for sociodemographics, behavioural factors, having diabetes and psychotherapeutic medication use, depressive symptoms were associated with poorer oral health. Severe depressive symptoms were associated with higher odds of mild periodontitis (2.20; 99% CI 1.03 to 4.66). For those with mild depressive symptoms, the mean number of missing teeth was 1.20 (99% CI 1.06 to 1.37) times the average of non-symptomatic individuals; and 1.38 times (99% CI 1.15 to 1.66) among individuals with moderate depressive symptoms. CONCLUSIONS: Depressive symptoms were associated with mild periodontitis and a greater number of missing teeth, while having teeth with untreated dental caries was attributed to sociodemographic factors. Awareness of oral health status among patients with depressive symptoms can inform both dental and mental health providers to develop tailored treatment and help patients achieve overall wellness.

INTRODUCTION: Youth cigarette smoking decreased significantly over the last two decades in the United States. This study provides estimates and trends from 2011 to 2018 and factors associated with youth menthol and non-menthol smoking from 2016 to 2018. METHODS: Using data from the 2011-2018 National Youth Tobacco Surveys, past 30-day (current) menthol and non-menthol cigarette smoking were estimated for all youth (prevalence) and youth smokers (proportions). Trends were examined using Joinpoint regression, calculating the annual percent change (APC). Multivariate logistic regression analyses identified factors associated with menthol smoking. RESULTS: From 2011 to 2018, menthol cigarette smoking among current youth cigarette smokers significantly decreased from 57.3% to 45.7% (APC: -3.0%), while non-menthol (38.2% to 47.3% [APC: 2.9%]) and unknown menthol status (not sure\missing) (4.5% to 7.0% [APC: 7.1%]) significantly increased. Menthol cigarette smoking among high school, male, female, and non-Hispanic white current cigarette smokers decreased, but remained unchanged among middle school, non-Hispanic black, and Hispanic smokers. Significantly higher proportions of menthol cigarette smokers smoked on >/=20 days, >/=2 cigarettes per day, and >/=100 cigarettes in their lifetime compared to non-menthol smokers. Among current cigarette smokers, non-Hispanic blacks, Hispanics, flavored non-cigarette tobacco users, frequent smokers (>/=20 days), those smoking 2-5 cigarettes per day, and those living with someone who uses tobacco had higher odds of menthol cigarette smoking. CONCLUSIONS: In 2018, nearly half of current youth cigarette smokers smoked menthol cigarettes. While menthol cigarette smoking declined from 2011 to 2018 among all youth and among youth smokers, there was no change in menthol cigarette smoking among non-Hispanic black, Hispanic, and middle school cigarette smokers. IMPLICATIONS: This study finds that overall cigarette and menthol cigarette smoking declined in youth from 2011 to 2018. However, menthol cigarette smoking among non-Hispanic black, Hispanic, and middle school youth cigarette smokers did not change. Information from this study can help inform efforts to reduce menthol cigarette smoking among US youth, particularly racial/ethnic minority populations.

BACKGROUND: Cocaine is the second most abused illicit drug in the United States (U.S.). To date, no study has examined the association between cocaine use and oral health with a nationally representative sample. Our study examined the association between cocaine use-singly and with other substances - and oral health outcomes, including periodontitis and untreated caries, among U.S. adults. METHODS: Data for 11,753 individuals, aged >/= 30 years, who completed a periodontal examination, in the 2009-2014 National Health and Nutrition Examination Survey (NHANES) were analyzed. Descriptive analyses and multivariable binary logistic regression analyses were conducted on weighted data. RESULTS: Overall, 17.0% (20.5 million) of U.S. adults aged >/= 30 years had ever used cocaine, with higher likelihood seen among males, non-Hispanic whites, and those living in poverty. Current cocaine use prevalence was 2.6% (3.2 million). By number of co-used substances, the odds of having any periodontitis were higher among cocaine users who consumed three or more other substances (Adjusted OR = 2.47; 95%CI = 1.15-5.30) when compared to solely cocaine users. By type of substance co-used, odds of having untreated caries were greater among those reporting cigarettes (Adjusted OR = 1.94; 95%CI = 1.21-3.11) or methamphetamine (Adjusted OR = 5.40; 95%CI = 1.92-15.14) usage. Odds of any periodontitis were higher among those reported ancillary cigarette use (Adjusted OR = 2.84; 95%CI = 1.60-5.04) compared with cocaine-only users. CONCLUSION: In addition to a positive association between periodontal disease, dental caries and cocaine use, select co-usage elevated the risk of oral disease. Patients should be screened for and counseled regarding substance abuse to facilitate a successful quit. This article is protected by copyright. All rights reserved.

OBJECTIVES: This research project aims at estimating the prevalence of cigarette smoking relapse and determining its predictors among adult former smokers in the USA. SETTING: This research analysed secondary data retrieved from the Tobacco Use Supplement-Current Population Survey 2010-2011 cohort in the USA. PARTICIPANTS: Out of 18 499 participants who responded to the survey in 2010 and 2011, the analysis included a total sample size of 3258 ever smokers, who were living in the USA and reported quitting smoking in 2010. The survey's respondents who never smoked or reported current smoking in 2010 were excluded from the study sample. PRIMARY AND SECONDARY OUTCOME MEASURES: Smoking relapse was defined as picking up smoking in 2011 after reporting smoking abstinence in 2010. The prevalence of relapse over the 12-month follow-up period was estimated among different subgroups. Multivariable logistic regression models were applied to determine factors associated with relapse. RESULTS: A total of 184 former smokers reported smoking relapse by 2011 (weighted prevalence 6.8%; 95% CI 5.7% to 8.1%). Prevalence and odds of relapse were higher among young people compared with elders. Former smokers living in smoke-free homes (SFHs) had 60% lower odds of relapse compared with those living in homes that allowed smoking inside (adjusted OR 0.40; 95% CI 0.25 to 0.64). Regarding race/ethnicity, only Hispanics showed significantly higher odds of relapse compared with Whites (non-Hispanics). Odds of relapse were higher among never married, widowed, divorced and separated individuals, compared with the married group. Continuous smoking cessation for 6 months or more significantly decreased odds of relapse. CONCLUSIONS: Wider health determinants, such as race and age, but also living in SFHs showed significant associations with smoking relapse, which could inform the development of more targeted programmes to support those smokers who successfully quit, although further longitudinal studies are required to confirm our findings.

OBJECTIVES: To assess trends and behavioral patterns of marijuana and cigarette and/or cigar (ie, smoked tobacco) use among 18- to 22-year-old US young adults who were in or not in college. METHODS: Data were from the 2002-2016 National Survey on Drug Use and Health. Past-30-day and past-12-month use of marijuana and smoked tobacco were assessed by college enrollment status. chi(2) tests were used to examine within- and between-group differences. Trends were assessed by using logistic regression and relative percentage change (RPC). RESULTS: Among both college and noncollege individuals during 2002 to 2016, exclusive marijuana use increased (faster increase among college students; RPC = 166.6 vs 133.7), whereas exclusive smoked tobacco use decreased (faster decrease among college students; RPC = -47.4 vs -43.2). In 2016, 51.6% of noncollege and 46.8% of college individuals reported past-12-month usage of marijuana and/or smoked tobacco products (P < .05). Exclusive marijuana use was higher among college than noncollege individuals, both for past-30-day (11.5% vs 8.6%) and past-12-month use (14.6% vs 10.8%). Exclusive smoked tobacco use was higher among noncollege than college individuals, both for past-30-day (17.7% vs 10.4%) and past-12-month (17.4% vs 12.2%) use (P < .05). CONCLUSIONS: Exclusive marijuana use is increasing among young adults overall, whereas exclusive smoked tobacco use is decreasing: faster rates are seen among college students. Exclusive marijuana use is higher among college students, whereas exclusive smoked tobacco use is higher among noncollege individuals. Surveillance of tobacco and marijuana use among young people is important as the policy landscape for these products evolves.

PURPOSE: Using cross-sectional data, we measured the association between electronic cigarette (e-cigarette) use and subsequent initiation and sustained use of cigarettes among U.S. youth. METHODS: Data were pooled from the 2015-2017 National Youth Tobacco Survey, a school-based survey of U.S. students in grades 6-12. Questions on current age and age of first use of different tobacco products (cigarettes, e-cigarettes, cigars, and smokeless tobacco) were used to ascertain the temporal sequence of tobacco product use. The pooled study population was 52,579 youth who 5 years before the survey had never smoked cigarettes. E-cigarette users were defined as those who used e-cigarettes before or without ever smoking cigarettes. Cigarette smoking was assessed with the following measures: ever smoking a cigarette at any time within the past 5 years and sustained smoking (smoked >/=1 year ago and within past 30 days). Adjusted odds ratios (AORs) were calculated, controlling for other tobacco product use and sociodemographics. RESULTS: Among never cigarette smokers as of 5 years before the survey, 17.4% used e-cigarettes, and 15.6% first smoked within the past 5 years. Compared with those who did not use e-cigarettes, those who used e-cigarettes had higher odds of ever smoking cigarettes within the past 5 years (AOR = 2.73) and had higher odds of sustained smoking (AOR = 1.55; all p < .05). CONCLUSIONS: E-cigarette use is associated with subsequent initiation and sustained use of cigarettes among youth. Efforts are warranted to reduce youth use of all tobacco products, including e-cigarettes.

In November 2018, US Food and Drug Administration announced its intent to prohibit menthol in combustible tobacco products, prohibit flavored cigars, and prohibit flavored e-cigarettes unless they are sold in age-restricted, in-person locations. This study assessed adult attitudes toward prohibiting flavors in all tobacco products, including e-cigarettes. Data were from the 2016 Summer Styles survey of 4203 US adults aged >/=18years. Respondents were asked whether they favored or opposed prohibiting flavors (e.g., menthol, spicy, sweet, or fruity flavor) in all tobacco products. Prevalence and correlates of favorability were assessed using weighted percentages and adjusted prevalence ratios (aPR) respectively. Assessed correlates were: sex, age, race/ethnicity, income, US Census region, marital status, children <18years living in the home, perceptions toward e-cigarette advertising, and current (past 30-day) tobacco product use. Overall, 47.3% of adults reported favorable attitudes toward prohibiting flavors in all tobacco products. By tobacco product use status, prevalence was 52.0%, 48.4%, and 34.8% among never, former, and current users, respectively (p<.05). Among current tobacco product users, favorability was more likely among adults who believed e-cigarette ads exposure makes youth think about smoking (aPR=1.82; 95% CI=1.20-2.78) and those with any children aged <18years in their household (aPR=1.38; 95% CI=1.05-1.82). To conclude, nearly half of adults favored prohibiting flavors in all tobacco products, including e-cigarettes. Prohibiting flavors in tobacco products could benefit public health by reducing both individual-level and population-level harms, including tobacco use initiation especially among youth.

BACKGROUND: Limited data exist on whether there is differential pricing of flavoured and non-flavoured varieties of the same product type. We assessed price of tobacco products by flavour type. METHODS: Retail scanner data from Nielsen were obtained for October 2011 to January 2016. Universal product codes were used to classify tobacco product (cigarettes, roll-your-own cigarettes (RYO), little cigars and moist snuff) flavours as: menthol, flavoured or non-flavoured. Prices were standardised to a cigarette pack (20 cigarette sticks) or cigarette pack equivalent (CPE). Average prices during 2015 were calculated overall and by flavour designation. Joinpoint regression and average monthly percentage change were used to assess trends. RESULTS: During October 2011 to January 2016, price trends increased for menthol (the only flavour allowed in cigarettes) and non-flavoured cigarettes; decreased for menthol, flavoured and non-flavoured RYO; increased for flavoured little cigars, but decreased for non-flavoured and menthol little cigars; and increased for menthol and non-flavoured moist snuff, but decreased for flavoured moist snuff. In 2015, average national prices were US$5.52 and US$5.47 for menthol and non-flavoured cigarettes; US$1.89, US$2.51 and US$4.77 for menthol, non-flavoured and flavoured little cigars; US$1.49, US$1.64 and US$1.78 per CPE for menthol, non-flavoured and flavoured moist snuff; and US$0.93, US$1.03 and $1.64 per CPE flavoured, menthol and non-flavoured RYO, respectively. CONCLUSION: Trends in the price of tobacco products varied across products and flavour types. Menthol little cigars, moist snuff and RYO were less expensive than non-flavoured varieties. Efforts to make flavoured tobacco products less accessible and less affordable could help reduce tobacco product use.

BACKGROUND: To assess disparities in current (past 30 days) cigarette smoking among US adults aged >/= 18 years during 2002-2016. METHODS: Nine indicators associated with social disadvantage were analysed from the 2002 to 2016 National Survey on Drug Use and Health: education, annual family income, sex, race/ethnicity, urbanicity, serious psychological distress, health insurance, public assistance, and employment status. Using descriptive and multivariable analyses, we measured trends in smoking overall and within the assessed variables. We also evaluated effect of interactions on disparities and estimated the excess number of smokers attributable to disparities. RESULTS: During 2002-2016, current cigarette smoking prevalence declined overall (27.5%-20.7%; p trend < 0.01), and among all subgroups except Medicare insurees and American Indians/Alaska Natives (AI/ANs). Overall inequalities in cigarette smoking grew even wider or remained unchanged for several indicators during the study period. In 2016, comparing groups with the least versus the most social advantage, the single largest disparity in current smoking prevalence was seen by race/ethnicity (prevalence ratio = 5.1, AI/ANs vs Asians). Education differences alone explained 38.0% of the observed racial/ethnic disparity in smoking prevalence. Interactions were also present; compared with the population-averaged prevalence among all AI/AN individuals (34.0%), prevalence was much higher among AI/ANs with <high school diploma (53.0%), unemployed (58.0%), or with serious psychological distress (66.9%). The burden of smoking attributable to race/ethnic disparities in smoking prevalence was an estimated 27.6 million smokers. CONCLUSIONS: Overall smoking inequality increased or remained unchanged because of slower declines in smoking prevalence among disadvantaged groups. Targeted interventions among high-risk groups can narrow disparities.

Private settings are major sources of secondhand smoke (SHS) exposure among youth. We measured prevalence and correlates of youth exposures to home and vehicle SHS. The 2016 National Youth Tobacco Survey of U.S. 6th-12th graders was analyzed (n=20,675). Past-7-day home or vehicle SHS exposures were self-reported. Descriptive and multivariable analyses were performed on weighted data. Among all students, past-7-day SHS exposures were: vehicle (21.4%, 5.56 million); home (21.7%, 5.64 million); home or vehicle (29.0%, 7.50 million); vehicle and home (14.0%, 3.63 million). By household tobacco-use status, home or vehicle SHS exposure was: tobacco-free households, 8.4%; households with combustible-only tobacco users, 59.8%; households with smokeless tobacco/e-cigarette-only users, 21.8%; and households with combined tobacco products usage, 73.9%. Where only the youth respondent but no other household member(s) used tobacco, the measure of association (vs. tobacco-free households) was ~two-fold higher for vehicle SHS exposures (Adjusted Odds Ratio [AOR]=6.09; 95% Confidence Interval [CI]=4.93-7.54 than for home SHS exposures (AOR=3.16; 95%CI=2.35-4.25). Conversely, where only household member(s) but not the youth respondent used tobacco, the measure of association was over two-fold higher for home SHS exposures (AOR=22.15; 95%CI=19.12-25.67) than for vehicle SHS exposure (AOR=7.91; 95%CI=6.96-8.98). In summary, nearly one-third of U.S. youth (7.50 million) were exposed to either home or vehicle SHS. Among non-tobacco-using youth with tobacco-using household member(s), the home was a dominant SHS exposure source; among tobacco-using youth with non-tobacco-using household member(s), a vehicle was a dominant exposure source, possibly peers'. Smoke-free environments, including homes and cars, can reduce youth SHS exposure.

INTRODUCTION: Widely marketed flavored tobacco products might appeal to nonusers and could be contributing to recent increases in tobacco product use. We assessed flavored product use among current tobacco users; and measured associations between flavored product use and dependence among US adults. METHODS: Data were from the 2014-2015 Tobacco Use Supplement to the Current Population Survey, a cross-sectional household-based survey of U.S. adults >/=18 years (n=163,920). Current users of cigarettes, cigars, pipes, hookahs, smokeless tobacco, and electronic cigarettes (e-cigarettes) were asked whether their usual product was menthol or came in any characterizing flavors. Proportions of flavored product users were computed nationally and by state and demographic characteristics. Tobacco dependence was assessed with two proxy measures: daily use and use </=30 minutes after waking. Associations between flavored product use and tobacco dependence were examined using logistic regression adjusted for sex, age, race/ethnicity, and multi tobacco product use. RESULTS: An estimated 41.0% of current users of any tobacco product usually used a flavored product during 2014-2015. The proportion ranged from 22.5% (Maine) to 62.1% (D.C.). By product, the proportion ranged from 28.3% (cigars) to 87.2% (hookah). Flavored product use was associated with: daily tobacco product use among current e-cigarette users (adjusted odds ratio [AOR]=1.71), cigar smokers (AOR=1.42), and cigarette smokers (AOR=1.13); and tobacco product use </=30 minutes after waking among current cigar smokers (AOR=1.80), and cigarette smokers (AOR=1.11). CONCLUSIONS: Restricting sales of flavored tobacco products and implementation of proven population-level tobacco control interventions could help reduce tobacco product use among U.S. adults. IMPLICATIONS: During 2014-2015, flavored tobacco products were widely used by U.S. adults with variations across states and demographic characteristics. Use of flavored e-cigarettes, flavored cigars, and menthol cigarettes were associated with daily tobacco use: use of flavored cigars and menthol cigarettes were associated with tobacco use within 30 minutes after waking. These findings suggest associations between flavor use and increased tobacco dependence. Prohibiting sale of flavored products can reduce access to those products, and could help reduce tobacco dependence and promote cessation behaviors among current tobacco product users.

IMPORTANCE: E-cigarette use in public places may renormalise tobacco use. OBJECTIVE: To measure associations between e-cigarette use in public places and social norms among youth. DESIGN: Cross-sectional survey. SETTING: School-based. PARTICIPANTS: 24 353 never tobacco users in US 6th-12th grades who completed the 2016-2017 National Youth Tobacco Surveys. EXPOSURE: Individuals were classified as exposed in public places within the past 30 days to: (1) neither e-cigarette secondhand aerosol (SHA) nor combustible tobacco secondhand smoke (SHS); (2) SHA only; (3) SHS only; and (4) both SHA and SHS. OUTCOMES: Outcomes were overestimation of peer e-cigarette use (a measure of descriptive norms), harm perception and susceptibility. Data were analysed using descriptive statistics and logistic regression (p<0.05). RESULTS: Overall prevalence of SHS and SHA exposure in public places was 46.6% and 18.3%, respectively. SHA exposure in public places was associated with increased odds of overestimating peer e-cigarette use (adjusted OR (AOR): 1.83; 95% CI 1.29 to 2.58) and decreased odds of perceiving e-cigarettes as harmful (AOR: 0.63; 95% CI 0.51 to 0.79), compared with those exposed to neither emission. SHA exposure in public places was also associated with increased susceptibility to using e-cigarettes (AOR: 2.26; 95% CI 1.82 to 2.81) and cigarettes (AOR: 1.51; 95% CI 1.20 to 1.90). E-cigarette harm perception was lower among students in jurisdictions with no comprehensive clean indoor air laws (AOR: 0.79; 95% CI 0.71 to 0.88) or cigarette-only laws (AOR: 0.88; 95% CI 0.78 to 0.99) than in those prohibiting both cigarette and e-cigarette use in public places. CONCLUSIONS: Prohibiting both e-cigarette and cigarette use in public places could benefit public health.

During the past few decades, wide disparities in tobacco product use have been documented among the largest racial/ethnic groups in the United States (1,2); however, little is known about tobacco product use among youths from racial/ethnic groups other than whites, blacks, and Hispanics. Surveillance reports typically aggregate these racial/ethnic minorities into a single category because of small sample sizes (3). To assess tobacco product use among U.S. middle and high school students from seven racial/ethnic groups (non-Hispanic whites [whites], non-Hispanic blacks [blacks], Hispanics, non-Hispanic Asians [Asians], non-Hispanic American Indian/Alaska natives [AI/ANs], non-Hispanic Native Hawaiians/Other Pacific Islanders [NHOPIs], and non-Hispanic multiracial persons [multiracial]), CDC analyzed pooled data from the 2014-2017 National Youth Tobacco Surveys (NYTS). Prevalence of ever (>/=1 time in lifetime) and current (>/=1 time in past 30 days) use of seven tobacco products (cigarettes, cigars, smokeless tobacco, electronic cigarettes [e-cigarettes], hookahs, pipes, and bidis) was assessed; any tobacco product use was defined as use of one or more tobacco products, including hand-rolled cigarettes. During 2014-2017, ever-use of any tobacco product among U.S. middle and high school students was as follows: NHOPIs (45.1%), AI/ANs (43.8%), multiracial persons (38.2%), Hispanics (35.1%), blacks (32.3%), whites (32.0%), and Asians (16.3%). Current use of any tobacco product was as follows: NHOPIs (23.4%), AI/ANs (20.6%), multiracial persons (16.5%), whites (15.3%), Hispanics (14.6%), blacks (11.5%), and Asians (5.0%). Among black middle and high school students, cigars were the most common product currently used, whereas e-cigarettes were the most commonly used product for all other racial/ethnic groups. Comprehensive and sustained implementation of evidence-based, population-level tobacco control interventions could reduce prevalence and disparities in tobacco product use among U.S. youths.

BACKGROUND: We investigated 3 social dimensions of youth hookah smoking: frequency, places smoked, and descriptive social norms. METHODS: Data were from the 2016 National Youth Tobacco Survey of US sixth- to 12th-graders (n = 20 675). Hookah smoking frequency was classified as never, former, current occasional, and current frequent. Places where past 30-day hookah smoking occurred and students' perceptions of their classmates' hookah smoking prevalence were assessed. Descriptive and multivariable analyses were performed (P < .05). RESULTS: Overall, 10.5% reported smoking hookah >/=1 time in their lifetime. Of these, 65.8% were former, 26.3% were current occasional, and 7.9% were current frequent smokers. Overall, 59.3% of students overestimated hookah smoking prevalence in their grade. Current occasional smoking was predicted by female sex (adjusted odds ratio [aOR] = 1.54) and peer hookah-smoking overestimation (aOR = 9.30). Current frequent smoking was most strongly predicted by living with a hookah smoker (aOR = 20.56), speaking a second language other than English (aOR = 2.17), and co-use of mentholated cigarettes (aOR = 19.94) or other flavored noncigarette tobacco products (aOR = 17.59). The top 3 places hookah was smoked were a friend's house (47.7%), the respondent's own house (31.8%), and another family member's house (20.8%). CONCLUSIONS: The home environment was the most common place for youth hookah smoking. Home-tailored interventions that encourage voluntary smoke-free rules and warn about the dangers of social smoking could help denormalize hookah smoking.

IMPORTANCE: Two components of social norms-descriptive (estimated prevalence) and injunctive (perceived acceptability)-can influence youth tobacco use. OBJECTIVE: To investigate electronic cigarettes (e-cigarette) and cigarette descriptive norms and measure the associations between overestimation of e-cigarette and cigarette prevalence and tobacco-related attitudes and behaviours. DESIGN: Cross-sectional. SETTING: School-based, using paper-and-pencil questionnaires. PARTICIPANTS: US 6th-12th graders participating in the 2015 (n=17 711) and 2016 (n=20 675) National Youth Tobacco Survey. EXPOSURE: Students estimated the percent of their grade-mates who they thought used e-cigarettes and cigarettes; the discordance between perceived versus grade-specific actual prevalence was used to categorise students as overestimating (1) neither product, (2) e-cigarettes only, (3) cigarettes only or (4) both products. OUTCOMES: Product-specific outcomes were curiosity and susceptibility (never users), as well as ever and current use (all students). Descriptive and multivariable logistic regression analyses were performed. Statistical significance was at P<0.05. Data were weighted to be nationally representative. RESULTS: More students overestimated cigarette (74.0%) than e-cigarette prevalence (61.0%; P<0.05). However, the associations between e-cigarette-only overestimation and e-cigarette curiosity (adjusted OR (AOR)=3.29), susceptibility (AOR=2.59), ever use (AOR=5.86) and current use (AOR=8.15) were each significantly larger than the corresponding associations between cigarette-only overestimation and cigarette curiosity (AOR=1.50), susceptibility (AOR=1.54), ever use (AOR=2.04) and current use (AOR=2.52). Despite significant declines in actual e-cigarette use prevalence within each high school grade level during 2015-2016, perceived prevalence increased (11th and 12th grades) or remained unchanged (9th and 10th grades). CONCLUSIONS: Four of five US students overestimated peer e-cigarette or cigarette use. Counter-tobacco mass media messages can help denormalise tobacco use.

BACKGROUND: We investigated tobacco-related self-identity and risk perceptions among adolescent tobacco users. METHODS: Data were analyzed for 20 675 US sixth- to 12th-graders from the 2016 National Youth Tobacco Survey. Students who reported past-30-day use of a specific tobacco product or >/=2 products but denied having used "any tobacco product" in the past 30 days were classified as not self-identifying as tobacco users. Tobacco product harm perceptions were further assessed across products. Descriptive and multivariable logistic regression analyses were performed. RESULTS: Among past-30-day users of >/=1 specific tobacco product type, those denying having used any tobacco products in the past 30 days included single-product users of roll-your-own and/or pipe tobacco (82.2%), electronic cigarettes (e-cigarettes) (59.7%), cigars (56.6%), hookah (44.0%), smokeless tobacco (38.5%), and cigarettes (26.5%) as well as poly-tobacco users (12.7%). The odds of denying using any tobacco products were higher among those without symptoms of nicotine dependence than those with symptoms (adjusted odds ratio = 2.16); and those who access their tobacco products via social sources than those who bought them (adjusted odds ratio = 3.81; all P < .05). Among those believing "all tobacco products" were harmful, single-product users of the following believed their own product was not harmful: e-cigarettes (74.6%), hookah (56.0%), smokeless tobacco (41.8%), and cigarettes (15.5%). CONCLUSIONS: Many of those who used certain tobacco products exclusively did not self-identify as tobacco users. Increasing the sensitivity of questions used to assess youth tobacco use in surveys and clinical settings can mitigate nondisclosure or underreporting of true tobacco use status.

Despite recent declines in cigarette smoking prevalence, the tobacco product landscape has shifted to include emerging tobacco products* (1,2). Previous research has documented adult use of smokeless tobacco and cigarettes by state (3); however, state-specific data on other tobacco products are limited. To assess tobacco product use in the 50 U.S. states and the District of Columbia (DC), CDC and the National Cancer Institute analyzed self-reported use of six tobacco product types: cigarettes, cigars, regular pipes, water pipes, electronic cigarettes (e-cigarettes), and smokeless tobacco products among adults aged >/=18 years using data from the 2014-2015 Tobacco Use Supplement to the Current Population Survey (TUS-CPS). Prevalence of ever-use of any tobacco product ranged from 27.0% (Utah) to 55.4% (Wyoming). Current (every day or some days) use of any tobacco product ranged from 10.2% (California) to 27.7% (Wyoming). Cigarettes were the most common currently used tobacco product in all states and DC. Among current cigarette smokers, the proportion who currently used one or more other tobacco products ranged from 11.5% (Delaware) to 32.3% (Oregon). Differences in tobacco product use across states underscore the importance of implementing proven population-level strategies to reduce tobacco use and expanding these strategies to cover all forms of tobacco marketed in the United States. Such strategies could include comprehensive smoke-free policies, tobacco product price increases, anti-tobacco mass media campaigns, and barrier-free access to clinical smoking cessation resources (1,4).

In 2015, an estimated 18.8 million U.S. adults were military veterans (1). Although the prevalence of tobacco-attributable conditions is high among veterans (2), there is a paucity of data on use of tobacco products, other than cigarettes, in this population. To monitor tobacco product use among veterans, CDC analyzed self-reported current (i.e., past 30-day) use of five tobacco product types (cigarettes, cigars [big cigars, cigarillos, or little cigars], roll-your-own tobacco, pipes, and smokeless tobacco [chewing tobacco, snuff, dip, or snus]) from the National Survey on Drug Use and Health (NSDUH). Overall, 29.2% of veterans reported current use of any of the assessed tobacco products. Cigarettes were the most commonly used tobacco product (21.6%), followed by cigars (6.2%), smokeless tobacco (5.2%), roll-your-own tobacco (3.0%), and pipes (1.5%); 7.0% of veterans currently used two or more tobacco products. Within subgroups of veterans, current use of any of the assessed tobacco products was higher among persons aged 18-25 years (56.8%), Hispanics (34.0%), persons with less than a high school diploma (37.9%), those with annual family income <$20,000 (44.3%), living in poverty (53.7%), reporting serious psychological distress (48.2%), and with no health insurance (60.1%). By age and sex subgroups, use of any of the assessed tobacco products was significantly higher among all veteran groups than their nonveteran counterparts, except males aged >/=50 years. Expanding the reach of evidence-based tobacco control interventions among veterans could reduce tobacco use prevalence in this population.

An overarching goal of Healthy People 2020 is to achieve health equity, eliminate disparities, and improve health among all groups.* Although significant progress has been made in reducing overall commercial tobacco product use,(dagger) disparities persist, with American Indians or Alaska Natives (AI/ANs) having one of the highest prevalences of cigarette smoking among all racial/ethnic groups (1,2). Variations in cigarette smoking among AI/ANs have been documented by sex and geographic location (3), but not by other sociodemographic characteristics. Furthermore, few data exist on use of tobacco products other than cigarettes among AI/ANs (4). CDC analyzed self-reported current (past 30-day) use of five tobacco product types among AI/AN adults from the 2010-2015 National Survey on Drug Use and Health (NSDUH); results were compared with six other racial/ethnic groups (Hispanic; non-Hispanic white [white]; non-Hispanic black [black]; non-Hispanic Native Hawaiian or other Pacific Islander [NHOPI]; non-Hispanic Asian [Asian]; and non-Hispanic multirace [multirace]). Prevalence of current tobacco product use was significantly higher among AI/ANs than among non-AI/ANs combined for any tobacco product, cigarettes, roll-your-own tobacco, pipes, and smokeless tobacco. Among AI/ANs, prevalence of current use of any tobacco product was higher among males, persons aged 18-25 years, those with less than a high school diploma, those with annual family income <$20,000, those who lived below the federal poverty level, and those who were never married. Addressing the social determinants of health and providing evidence-based, population-level, and culturally appropriate tobacco control interventions could help reduce tobacco product use and eliminate disparities in tobacco product use among AI/ANs.

Policies prohibiting smokeless tobacco (SLT) use at sports venues have been enacted in California and nine U.S. cities. We measured opposition toward SLT use at all public sports venues and its correlates among U.S. adults. Data were from the 2016 SummerStyles, a web-based survey of U.S. adults aged ≥18years (n=4203). Weighted estimates of opposition ("strongly" or "somewhat") SLT use were computed overall and by selected characteristics. Multivariable Poisson regression analyses were performed to identify determinants of opposition toward SLT use overall and among current tobacco product users. Overall, 81.8% of U.S. adults opposed SLT use at all public sports venues. Opposition varied by tobacco product use status: 85.9%, 86.9% and 60.4% among never, former, and current tobacco product users, respectively. Among all adults, the likelihood of opposition was higher among females than males (Adjusted Prevalence Ratio [APR]=1.05; 95%CI=1.01-1.08) and increased with every 10-year increase in age (APR=1.01; 95%CI=1.00-1.02). Likelihood was lower among persons with a high school diploma (APR=0.92; 95%CI=0.88-0.96) than those with college degree or higher; persons widowed/divorced/separated (APR=0.92; 95%CI=0.87-0.97) than those married; and current tobacco product users (APR=0.70; 95%CI=0.65-0.76) than never users. Among current tobacco product users, likelihood was lower among persons living in the Midwest (APR=0.81; 95%CI=0.66-0.98) and South (APR=0.78; 95%CI=0.65-0.94) than the Northeast. Most U.S. adults, including three-fifths of current tobacco product users, oppose SLT use at all public sports venues. Complete tobacco-free policies for sports venues that prohibit all forms of tobacco product use can help reduce the social acceptability of SLT use.

Smokeless tobacco has been actively promoted by tobacco companies using endorsements by major sport figures, and research indicates that tobacco advertising can lead to youth initiation of tobacco use. Television and radio advertisements for cigarettes and smokeless tobacco have been prohibited since 1969,* and the 1998 Master Settlement Agreement(dagger) further prohibited tobacco companies from targeting youths with tobacco product advertisements in specified areas. In 2010, the Food and Drug Administration (FDA), under authority of the 2009 Family Smoking Prevention and Tobacco Control Act (FSPTCA), prohibited tobacco-brand sponsorship (i.e., sponsorship of sports and entertainment events or other social or cultural events using the tobacco brand name or anything identifiable with any brand of cigarettes or smokeless tobacco).( section sign) However, corporate-name tobacco sponsorship (i.e., sponsorship using the name of the corporation that manufactures regulated tobacco products) is still permitted under certain conditions. To monitor tobacco advertising and promotional activities in sports in the United States, CDC analyzed trends in sports-related marketing expenditures for cigarettes and smokeless tobacco during 1992-2013 using data from the Federal Trade Commission (FTC). During 1992-2013, sports-related marketing expenditures, adjusted by the consumer price index to constant 2013 dollars, decreased significantly for both cigarettes (from $136 million in 1992 to $0 in 2013) and smokeless tobacco (from $34.8 million in 1992 to $2.1 million in 2013). During 2010-2013, after the prohibition of tobacco-brand sponsorship in sports under the FSPTCA, cigarette manufacturers reported no spending (i.e., $0) on sports-related advertising and promotional activities; in contrast, smokeless tobacco manufacturers reported expenditures of $16.3 million on advertising and promoting smokeless tobacco in sports during 2010-2013. These findings indicate that despite prohibitions on brand sponsorship, smokeless tobacco products continue to be marketed in sports in the United States, potentially through other indirect channels such as corporate-name sponsorship. Enhanced measures are warranted to restrict youth-oriented tobacco marketing and promotional activities that could lead to tobacco initiation and use among children and adolescents. Reducing tobacco industry promotion through sponsorship of public and private events is an evidence-based strategy for preventing youth initiation of tobacco use. In addition, other proven interventions (e.g., tobacco price increases, anti-tobacco mass media campaigns, tobacco-free policies inclusive of smokeless tobacco, and barrier-free access to cessation services), could help reduce smokeless tobacco use in the United States.