Last data update: Mar 21, 2025. (Total: 48935 publications since 2009)
Records 1-19 (of 19 Records) |
Query Trace: Ackers M[original query] |
---|
Sensitivity, completeness and agreement of the tuberculosis electronic system in Ho Chi Minh City, Viet Nam
Thai LH , Nhat LM , Shah N , Lyss S , Ackers M . Public Health Action 2017 7 (4) 294-298 Setting: Since 2011, tuberculosis (TB) clinics in Ho Chi Minh City (HCMC), Viet Nam, have been entering data from a paper-based TB treatment register into an electronic database known as VITIMES (Viet Nam TB Information Management Electronic System), which is currently used in parallel with the paper system. Objective: To evaluate the sensitivity, completeness and agreement of data in VITIMES with that of paper-based registers among TB patients co-infected with the human immunodeficiency virus (HIV) being treated for TB in HCMC. Design: This was a retrospective data review of all TB-HIV patients receiving anti-tuberculosis treatment in each of the 24 district TB clinics in HCMC in 2013. Data were abstracted from the paper-based TB treatment registers at district level and extracted electronically at the provincial level. Records were matched based on name, age and address. The sensitivity, completeness and agreement of the electronic data were compared with data from the paper system. Results: The findings showed that the electronic system had high sensitivity (99.2%), high completeness (87-99%) and high agreement (κ 0.78-0.97) for all variables. Conclusion: The results of this study suggest that data are being correctly entered into VITIMES and that patient data can be directly entered into VITIMES instead of having a parallel, paper-based system. |
Positive predictive value of the WHO clinical and immunologic criteria to predict viral load failure among adults on first, or second-line antiretroviral therapy in Kenya
Waruru A , Muttai H , Ng'ang'a L , Ackers M , Kim A , Miruka F , Erick O , Okonji J , Ayuaya T , Schwarcz S . PLoS One 2016 11 (7) e0158881 Routine HIV viral load (VL) monitoring is the standard of care for persons receiving antiretroviral therapy (ART) in developed countries. Although the World Health Organization recommends annual VL monitoring of patients on ART, recognizing difficulties in conducting routine VL testing, the WHO continues to recommend targeted VL testing to confirm treatment failure for persons who meet selected immunologic and clinical criteria. Studies have measured positive predictive value (PPV), negative predictive value, sensitivity and specificity of these criteria among patients receiving first-line ART but not specifically among those on second-line or subsequent regimens. Between 2008 and 2011, adult ART patients in Nyanza, Kenya who met national clinical or immunologic criteria for treatment failure received targeted VL testing. We calculated PPV and 95% confidence intervals (CI) of these criteria to detect virologic treatment failure among patients receiving a) first-line ART, b) second/subsequent ART, and c) any regimen. Of 12,134 patient specimens tested, 2,874 (23.7%) were virologically confirmed as treatment failures. The PPV for 2,834 first-line ART patients who met either the clinical or immunologic criteria for treatment failure was 34.4% (95% CI 33.2-35.7), 33.1% (95% CI 24.7-42.3) for the 40 patients on second-line/subsequent regimens, and 33.4% (95% CI 33.1-35.6) for any ART. PPV, regardless of criteria, for first-line ART patients was lowest among patients over 44 years old and highest for patients aged 15 to 34 years. PPV of immunological and clinical criteria for correctly identifying treatment failure was similarly low for adult patients receiving either first-line or second-line/subsequent ART regimens. Our data confirm the inadequacy of clinical and immunologic criteria to correctly identify treatment failure and support the implementation of routine VL testing. |
Effects of Antenatal Care and HIV Treatment Integration on Elements of the PMTCT Cascade: Results From the SHAIP Cluster-Randomized Controlled Trial in Kenya
Turan JM , Onono M , Steinfeld RL , Shade SB , Owuor K , Washington S , Bukusi EA , Ackers ML , Kioko J , Interis EC , Cohen CR . J Acquir Immune Defic Syndr 2015 69 (5) e172-81 BACKGROUND: Integrating antenatal care (ANC) and HIV care may improve uptake and retention in services along the prevention of mother-to-child transmission (PMTCT) cascade. The current study aimed to determine if integration of HIV services into ANC settings improves PMTCT service utilization outcomes. METHODS: ANC clinics in rural Kenya were randomized to integrated (6 clinics, 569 women) or non-integrated (6 clinics, 603 women) services. Intervention clinics provided all HIV services, including highly active antiretroviral therapy (HAART), while control clinics provided PMTCT services but referred women to HIV care clinics within the same facility. PMTCT utilization outcomes among HIV-infected women (maternal HIV care enrollment, HAART initiation, and 3-month infant HIV testing uptake) were compared using generalized estimating equations and Cox regression. RESULTS: HIV care enrollment was higher in intervention compared to control clinics (69% versus 36%, Odds Ratio (OR)=3.94, 95% Confidence Interval (CI): 1.14-13.63). Median time to enrollment was significantly shorter among intervention arm women (0 versus 8 days, Hazard Ratio (HR)=2.20, 95% CI: 1.62-3.01). Eligible women in the intervention arm were more likely to initiate HAART (40% versus 17%, OR=3.22, 95% CI: 1.81-5.72). Infant testing was more common in the intervention arm (25% versus 18%), however not statistically different. No significant differences were detected in postnatal service uptake or maternal retention. CONCLUSIONS: Service integration increased maternal HIV care enrollment and HAART uptake. However, PMTCT utilization outcomes were still suboptimal, and postnatal service utilization remained poor in both study arms. Further improvements in the PMTCT cascade will require additional research and interventions. |
Implementation and Operational Research: Effect of Integration of HIV Care and Treatment Into Antenatal Care Clinics on Mother-to-Child HIV Transmission and Maternal Outcomes in Nyanza, Kenya: Results From the SHAIP Cluster Randomized Controlled Trial
Washington S , Owuor K , Turan JM , Steinfeld RL , Onono M , Shade SB , Bukusi EA , Ackers ML , Cohen CR . J Acquir Immune Defic Syndr 2015 69 (5) e164-71 BACKGROUND: Many HIV-infected pregnant women identified during antenatal care do not enroll in long-term HIV care, resulting in deterioration of maternal health and continued risk of HIV transmission to infants. METHODS: We performed a cluster-randomized trial to evaluate the effect of integrating HIV care into ANC clinics in rural Kenya. Twelve facilities were randomized to provide either integrated services (ANC, PMTCT, and HIV care delivered in the ANC clinic; n=6 intervention facilities), or standard ANC services (including PMTCT and referral to a separate clinic for HIV care; n=6 control facilities). RESULTS: There were high patient attrition rates over the course of this study. Among study participants who enrolled in HIV care, there was twelve month follow up data for 256/611 (41.8%) women, and postpartum data for only 325/1172 (28%) women. By 9 months of age, 382/568 (67.3%) infants at intervention sites and 338/594 (57.0%) at control sites had tested for HIV (OR 1.45, 95% CI 0.71-2.82); 7.3% of infants tested HIV-positive at intervention sites compared to 8.0% of infants at control sites (OR 0.89, 95% CI 0.56-1.43). The composite clinical/immunologic progression into AIDS was similar in both arms (4.9% vs. 5.1 %, OR 0.83, 95% CI 0.41 - 1.68). CONCLUSIONS: Despite the provision of integrated services, patient attrition was substantial in both arms, suggesting barriers beyond lack of service integration. Integration of HIV services into the ANC clinic was not associated with a reduced risk HIV transmission to infants and did not appear to affect short-term maternal health outcomes. |
Pregnancy desire and dual method contraceptive use among people living with HIV attending clinical care in Kenya, Namibia and Tanzania
Antelman G , Medley A , Mbatia R , Pals S , Arthur G , Haberlen S , Ackers M , Elul B , Parent J , Rwebembera A , Wanjiku L , Muraguri N , Gweshe J , Mudhune S , Bachanas P . J Fam Plann Reprod Health Care 2015 41 (1) e1 AIM: To describe factors associated with pregnancy desire and dual method use among people living with HIV in clinical care in sub-Saharan Africa. DESIGN: Sexually active HIV-positive adults were enrolled in 18 HIV clinics in Kenya, Namibia and Tanzania. Demographic, clinical and reproductive health data were captured by interview and medical record abstraction. Correlates of desiring a pregnancy within the next 6 months, and dual method use [defined as consistent condom use together with a highly effective method of contraception (hormonal, intrauterine device (IUD), permanent)], among those not desiring pregnancy, were identified using logistic regression. RESULTS: Among 3375 participants (median age 37 years, 42% male, 64% on antiretroviral treatment), 565 (17%) desired a pregnancy within the next 6 months. Of those with no short-term fertility desire (n=2542), 686 (27%) reported dual method use, 250 (10%) highly effective contraceptive use only, 1332 (52%) condom use only, and 274 (11%) no protection. Respondents were more likely to desire a pregnancy if they were from Namibia and Tanzania, male, had a primary education, were married/cohabitating, and had fewer children. Factors associated with increased likelihood of dual method use included being female, being comfortable asking a partner to use a condom, and communication with a health care provider about family planning. Participants who perceived that their partner wanted a pregnancy were less likely to report dual method use. CONCLUSIONS: There was low dual method use and low use of highly effective contraception. Contraceptive protection was predominantly through condom-only use. These findings demonstrate the importance of integrating reproductive health services into routine HIV care. |
The impact of home-based HIV counseling and testing on care-seeking and incidence of common infectious disease syndromes in rural western Kenya
Bigogo G , Amolloh M , Laserson KF , Audi A , Aura B , Dalal W , Ackers M , Burton D , Breiman RF , Feikin DR . BMC Infect Dis 2014 14 (1) 376 BACKGROUND: In much of Africa, most individuals living with HIV do not know their status. Home-based counseling and testing (HBCT) leads to more HIV-infected people learning their HIV status. However, there is little data on whether knowing one's HIV-positive status necessarily leads to uptake of HIV care, which could in turn, lead to a reduction in the prevalence of common infectious disease syndromes. METHODS: In 2008, Kenya Medical Research Institute (KEMRI) in collaboration with the Centers for Disease Control and Prevention (CDC) offered HBCT to individuals (aged ≥13 years) under active surveillance for infectious disease syndromes in Lwak in rural western Kenya. HIV test results were linked to morbidity and healthcare-seeking data collected by field workers through bi-weekly home visits. We analyzed changes in healthcare seeking behaviors using proportions, and incidence (expressed as episodes per person-year) of acute respiratory illness (ARI), severe acute respiratory illness (SARI), acute febrile illness (AFI) and diarrhea among first-time HIV testers in the year before and after HBCT, stratified by their test result and if HIV-positive, whether they sought care at HIV Patient Support Centers (PSCs). RESULTS: Of 9,613 individuals offered HBCT, 6,366 (66%) were first-time testers, 698 (11%) of whom were HIV-infected. One year after HBCT, 50% of HIV-infected persons had enrolled at PSCs - 92% of whom had started cotrimoxazole and 37% of those eligible for antiretroviral treatment had initiated therapy. Among HIV-infected persons enrolled in PSCs, AFI and diarrhea incidence decreased in the year after HBCT (rate ratio [RR] 0.84; 95% confidence interval [CI] 0.77 - 0.91 and RR 0.84, 95% CI 0.73 - 0.98, respectively). Among HIV-infected persons not attending PSCs and among HIV-uninfected persons, decreases in incidence were significantly lower. While decreases also occurred in rates of respiratory illnesses among HIV-positive persons in care, there were similar decreases in the other two groups. CONCLUSIONS: Large scale HBCT enabled a large number of newly diagnosed HIV-infected persons to know their HIV status, leading to a change in care seeking behavior and ultimately a decrease in incidence of common infectious disease syndromes through appropriate treatment and care. |
Antiretroviral therapy uptake among adult tuberculosis patients newly diagnosed with HIV in Nyanza Province, Kenya
Muttai H , Laserson KF , Akello I , Nyabiage L , Gondi J , Mutegi J , Williamson J , Nakashima AK , Ackers ML . Public Health Action 2013 3 (4) 286-293 SETTING: In 2008, the Kenya tuberculosis (TB) program reported low (31%) antiretroviral therapy (ART) uptake among human immunodeficiency virus (HIV) infected TB patients. OBJECTIVE: To confirm ART coverage and identify factors associated with HIV clinic enrollment and ART initiation among TB patients. DESIGN: Retrospective chart abstraction of adult TB patients newly diagnosed with HIV and eligible for ART at 58 Nyanza Province TB clinics between October 2006 and April 2008. TB data were linked to HIV clinic data at 50 facilities that provided ART. Associations with HIV clinic enrollment and ART were evaluated. RESULTS: Among 1137 ART-eligible TB patient records sampled, 32% documented HIV clinic enrollment and 29% ART. Date fields were largely incomplete; 11% of the patient records included HIV testing dates and <=1% had dates for cotrimoxazole prophylaxis, HIV clinic enrollment and ART initiation. Adding HIV clinic data increased HIV clinic enrollment and ART documentation to respectively 62% and 44%. Among TB patients in HIV care, female sex, older age group and baseline CD4 documentation were associated with ART initiation. CONCLUSION: Linking data increased documentation of HIV clinic enrollment and ART uptake. Continued efforts are required to improve the documentation of HIV service delivery, especially in TB clinics. Interventions to increase ART uptake are needed for younger patients and men. |
Health care utilization and access to human immunodeficiency virus (HIV) testing and care and treatment services in a rural area with high HIV prevalence, Nyanza Province, Kenya, 2007
Ackers ML , Hightower A , Obor D , Ofware P , Ngere L , Kubaje A , Laserson KF . Am J Trop Med Hyg 2013 90 (2) 224-33 We present health and demographic surveillance system data to assess associations with healthcare use and human immunodeficiency virus (HIV) service receipt in a high HIV prevalence area of western Kenya. Eighty-six percent of 15,302 residents indicated a facility/clinician for routine medical services; 60% reported active (within the past year) attendance. Only 34% reported a previous HIV test, and self-reported HIV prevalence was 6%. Active attendees lived only slightly closer to their reported service site (2.8 versus 3.1 km; P < 0.001) compared with inactive attendees. Multivariate analysis showed that younger respondents (< 30 years of age) and active and inactive attendees were more likely to report an HIV test compared with non-attendees; men were less likely to report HIV testing. Despite traveling farther for HIV services (median distance = 4.4 km), 77% of those disclosing HIV infection reported HIV care enrollment. Men and younger respondents were less likely to enroll in HIV care. Socioeconomic status was not associated with HIV service use. Distance did not appear to be the major barrier to service receipt. The health and demographic surveillance system data identified patterns of service use that are useful for future program planning. |
Sexual risk behavior among HIV-uninfected men who have sex with men (MSM) participating in a tenofovir pre-exposure prophylaxis (PrEP) randomized trial in the United States
Liu AY , Vittinghoff E , Chillag K , Mayer K , Thompson M , Grohskopf L , Colfax G , Pathak S , Gvetadze R , O'Hara B , Collins B , Ackers M , Paxton L , Buchbinder SP . J Acquir Immune Defic Syndr 2013 64 (1) 87-94 OBJECTIVE: To evaluate for changes in sexual behaviors associated with daily pill-use among MSM participating in a PrEP trial. DESIGN: Randomized, double-blind, placebo-controlled trial. Participants were randomized 1:1:1:1 to receive tenofovir disoproxil fumarate or placebo at enrollment or after a 9-month delay and followed for 24 months. METHODS: 400 HIV-negative MSM reporting anal sex with a man in the past 12 months and meeting other eligibility criteria enrolled in San Francisco, Atlanta, and Boston. Sexual risk was assessed at baseline and quarterly visits using Audio Computer-Assisted Self-Interview. The association of pill-taking with sexual behavior was evaluated using logistic and negative-binomial regression for repeated measures. RESULTS: Overall indices of behavioral risk declined or remained stable during follow-up. Mean numbers of partners and proportion reporting unprotected anal sex (UAS) declined during follow-up (p<0.05), and mean UAS episodes remained stable. During the initial 9 months, changes in risk practices were similar in the group that began pills immediately vs. those in the delayed arm. These indices of risk did not differ significantly after initiation of pill-use in the delayed arm or continuation of study medication in the immediate arm. Use of poppers, amphetamines, and sexual performance-enhancing drugs were independently associated with one or more indices of sexual risk. CONCLUSIONS: There was no evidence of risk compensation among HIV-uninfected MSM in this clinical trial. Monitoring for risk compensation should continue now that PrEP has been shown to be efficacious in MSM and other populations and will be provided in open-label trials and other contexts. |
HIV prevention in care and treatment settings: baseline risk behaviors among HIV patients in Kenya, Namibia, and Tanzania
Kidder DP , Bachanas P , Medley A , Pals S , Nuwagaba-Biribonwoha H , Ackers M , Howard A , Deluca N , Mbatia R , Sheriff M , Arthur G , Katuta F , Cherutich P , Somi G . PLoS One 2013 8 (2) e57215 HIV care and treatment settings provide an opportunity to reach people living with HIV/AIDS (PLHIV) with prevention messages and services. Population-based surveys in sub-Saharan Africa have identified HIV risk behaviors among PLHIV, yet data are limited regarding HIV risk behaviors of PLHIV in clinical care. This paper describes the baseline sociodemographic, HIV transmission risk behaviors, and clinical data of a study evaluating an HIV prevention intervention package for HIV care and treatment clinics in Africa. The study was a longitudinal group-randomized trial in 9 intervention clinics and 9 comparison clinics in Kenya, Namibia, and Tanzania (N=3538). Baseline participants were mostly female, married, had less than a primary education, and were relatively recently diagnosed with HIV. Fifty-two percent of participants had a partner of negative or unknown status, 24% were not using condoms consistently, and 11% reported STI symptoms in the last 6 months. There were differences in demographic and HIV transmission risk variables by country, indicating the need to consider local context in designing studies and using caution when generalizing findings across African countries. Baseline data from this study indicate that participants were often engaging in HIV transmission risk behaviors, which supports the need for prevention with PLHIV (PwP). TRIAL REGISTRATION: ClinicalTrials.gov NCT01256463. |
Randomized trial of clinical safety of daily oral tenofovir disoproxil fumarate (TDF) among HIV-uninfected men who have sex with men (MSM) in the United States
Grohskopf LA , Chillag KL , Gvetadze R , Liu AY , Thompson M , Mayer KH , Collins BM , Pathak SR , O'Hara B , Ackers ML , Rose CE , Grant RM , Paxton LA , Buchbinder SP . J Acquir Immune Defic Syndr 2013 64 (1) 79-86 OBJECTIVES: To evaluate the clinical safety of daily tenofovir disoproxil fumarate (TDF) among HIV-negative MSM. DESIGN: Randomized, double-blind, placebo-controlled trial. Participants were randomized 1:1:1:1 to immediate or delayed study drug (TDF [300mg orally/day] or placebo). METHODS: 400 healthy HIV-uninfected MSM reporting anal sex with another man within the previous 12 months enrolled in Atlanta, Boston, and San Francisco. HIV serostatus, clinical and laboratory adverse events, adherence (pill count, Medical Event Monitoring System, [MEMS] and self-report), sexual and other sociobehavioral data were assessed at 3-month intervals for 24 months. Primary outcomes were clinical safety, assessed by incidence of adverse events and laboratory abnormalities. RESULTS: Study drug was initiated by 373 (93%) participants (186 TDF, 187 placebo), of whom 325 (87%) completed the final study visit. Of 2,428 adverse events reported among 334 (90%) participants, 2,366 (97%) were mild or moderate in severity.Frequencies of commonly reported adverse events did not differ significantly between TDF and placebo arms. In multivariable analyses, back pain was more likely among TDF recipients (p=0.04); these reports were not associated with documented fractures or other objective findings. There were no Grade ≥3 creatinine elevations; Grade 1 and 2 creatinine increases were not associated with TDF receipt. Estimated percent of study drug doses taken was 92% by pill count and 77% by MEMS. Seven seroconversions occurred; 4 on placebo and 3 among delayed arm participants not yet on study drug. CONCLUSION: Daily oral TDF was well tolerated, with reasonable adherence. No significant renal concerns were identified. |
Mortality trends from 2003 to 2009 among adolescents and young adults in rural western Kenya using a health and demographic surveillance system
Phillips-Howard PA , Odhiambo FO , Hamel M , Adazu K , Ackers M , van Eijk AM , Orimba V , Hoog AV , Beynon C , Vulule J , Bellis MA , Slutsker L , de Cock K , Breiman R , Laserson KF . PLoS One 2012 7 (11) e47017 BACKGROUND: Targeted global efforts to improve survival of young adults need information on mortality trends; contributions from health and demographic surveillance system (HDSS) are required. METHODS AND FINDINGS: This study aimed to explore changing trends in deaths among adolescents (15-19 years) and young adults (20-24 years), using census and verbal autopsy data in rural western Kenya using a HDSS. Mid-year population estimates were used to generate all-cause mortality rates per 100,000 population by age and gender, by communicable (CD) and non-communicable disease (NCD) causes. Linear trends from 2003 to 2009 were examined. In 2003, all-cause mortality rates of adolescents and young adults were 403 and 1,613 per 100,000 population, respectively, among females; and 217 and 716 per 100,000, respectively, among males. CD mortality rates among females and males 15-24 years were 500 and 191 per 100,000 (relative risk [RR] 2.6; 95% confidence intervals [CI] 1.7-4.0; p<0.001). NCD mortality rates in same aged females and males were similar (141 and 128 per 100,000, respectively; p = 0.76). By 2009, young adult female all-cause mortality rates fell 53% (chi(2) for linear trend 30.4; p<0.001) and 61.5% among adolescent females (chi(2) for linear trend 11.9; p<0.001). No significant CD mortality reductions occurred among males or for NCD mortality in either gender. By 2009, all-cause, CD, and NCD mortality rates were not significantly different between males and females, and among males, injuries equalled HIV as the top cause of death. CONCLUSIONS: This study found significant reductions in adolescent and young adult female mortality rates, evidencing the effects of targeted public health programmes, however, all-cause and CD mortality rates among females remain alarmingly high. These data underscore the need to strengthen programmes and target strategies to reach both males and females, and to promote NCD as well as CD initiatives to reduce the mortality burden amongst both gender. |
Early uptake of HIV clinical care after testing HIV-positive during home-based testing and counseling in western Kenya
Medley A , Ackers M , Amolloh M , Owuor P , Muttai H , Audi B , Sewe M , Laserson K . AIDS Behav 2012 17 (1) 224-34 Home-based HIV testing and counseling (HBTC) has the potential to increase access to HIV testing. However, the extent to which HBTC programs successfully link HIV-positive individuals into clinical care remains unclear. To determine factors associated with early enrollment in HIV clinical care, adult residents (aged ≥13 years) in the Health and Demographic Surveillance System in Kisumu, Kenya were offered HBTC. All HIV-positive residents were referred to nearby HIV clinical care centers. Two to four months after HBTC, peer educators conducted home visits to consenting HIV-positive residents. Overall, 9,895 (82 %) of 12,035 residents accepted HBTC; 1,087 (11 %) were HIV-positive; and 737 (68 %) received home visits. Of those receiving home visits, 42 % reported HIV care attendance. Factors associated with care attendance included: having disclosed, living with someone attending HIV care, and wanting to seek care after diagnosis. Residents who reported their current health as excellent or who doubted their HBTC result were less likely to report care attendance. While findings indicate that HBTC was well-received in this setting, less than half of HIV-positive individuals reported current care attendance. Identification of effective strategies to increase early enrollment and retention in HIV clinical care is critical and will require coordination between testing and treatment program staff and systems. |
The study of HIV and antenatal care integration in pregnancy in Kenya: design, methods, and baseline results of a cluster-randomized controlled trial
Turan JM , Steinfeld RL , Onono M , Bukusi EA , Woods M , Shade SB , Washington S , Marima R , Penner J , Ackers ML , Mbori-Ngacha D , Cohen CR . PLoS One 2012 7 (9) e44181 BACKGROUND: Despite strong evidence for the effectiveness of anti-retroviral therapy for improving the health of women living with HIV and for the prevention of mother-to-child transmission (PMTCT), HIV persists as a major maternal and child health problem in sub-Saharan Africa. In most settings antenatal care (ANC) services and HIV treatment services are offered in separate clinics. Integrating these services may result in better uptake of services, reduction of the time to treatment initiation, better adherence, and reduction of stigma. METHODOLOGY/PRINCIPAL FINDINGS: A prospective cluster randomized controlled trial design was used to evaluate the effects of integrating HIV treatment into ANC clinics at government health facilities in rural Kenya. Twelve facilities were randomized to provide either fully integrated services (ANC, PMTCT, and HIV treatment services all delivered in the ANC clinic) or non-integrated services (ANC clinics provided ANC and basic PMTCT services and referred clients to a separate HIV clinic for HIV treatment). During June 2009- March 2011, 1,172 HIV-positive pregnant women were enrolled in the study. The main study outcomes are rates of maternal enrollment in HIV care and treatment, infant HIV testing uptake, and HIV-free infant survival. Baseline results revealed that the intervention and control cohorts were similar with respect to socio-demographics, male partner HIV testing, sero-discordance of the couple, obstetric history, baseline CD4 count, and WHO Stage. Challenges faced while conducting this trial at low-resource rural health facilities included frequent staff turnover, stock-outs of essential supplies, transportation challenges, and changes in national guidelines. CONCLUSIONS/SIGNIFICANCE: This is the first randomized trial of ANC and HIV service integration to be conducted in rural Africa. It is expected that the study will provide critical evidence regarding the implementation and effectiveness of this service delivery strategy, with important implications for programs striving to eliminate vertical transmission of HIV and improve maternal health. TRIAL REGISTRATION: ClinicalTrials.gov NCT00931216 NCT00931216. |
High and persistent HIV seroincidence in men who have sex with men across 47 U.S. cities
Ackers ML , Greenberg AE , Lin CY , Bartholow BN , Goodman AH , Longhi M , Gurwith M . PLoS One 2012 7 (4) e34972 OBJECTIVE: To provide HIV seroincidence data among men who have sex with men (MSM) in the United States and to identify predictive factors for seroconversion. METHODS: From 1998-2002, 4684 high-risk MSM, age 18-60 years, participated in a randomized, placebo-controlled HIV vaccine efficacy trial at 56 U.S. clinical trial sites. Demographics, behavioral data, and HIV status were assessed at baseline and 6 month intervals. Since no overall vaccine efficacy was detected, data were combined from both trial arms to calculate HIV incidence based on person-years (py) of follow-up. Predictors of seroconversion, adjusted hazards ratio (aHR), were evaluated using a Cox proportional hazard model with time-varying covariates. RESULTS: Overall, HIV incidence was 2.7/100 py and was relatively uniform across study sites and study years. HIV incidence was highest among young men and men reporting unprotected sex, recreational drug use, and a history of a sexually transmitted infection. Independent predictors of HIV seroconversion included: age 18-30 years (aHR = 2.4; 95% CI 1.4,4.0), having >10 partners (aHR = 2.4; 95% CI 1.7,3.3), having a known HIV-positive male sex partner (aHR = 1.6; 95% CI 1.2, 2.0), unprotected anal intercourse with HIV positive/unknown male partners (aHR = 1.7; 95% CI 1.3, 2.3), and amphetamine (aHR = 1.6; 95% CI 1.1, 2.1) and popper (aHR = 1.7; 95% CI 1.3, 2.2) use. CONCLUSIONS: HIV seroincidence was high among MSM despite repeated HIV counseling and reported declines in sexual risk behaviors. Continuing development of new HIV prevention strategies and intensification of existing efforts will be necessary to reduce the rate of new HIV infections, especially among young men. |
The adult population impact of HIV care and antiretroviral therapy (ART)- Nyanza Province, Kenya, 2003-2008
Gargano JW , Laserson K , Muttai H , Odhiambo F , Orimba V , Adamu-Zeh M , Williamson J , Sewe M , Nyabiage L , Owuor K , Broz D , Marston B , Ackers M . AIDS 2012 26 (12) 1545-54 OBJECTIVE: To describe the population uptake of HIV care including antiretroviral therapy (ART) and its impact on adult mortality in a rural area of western Kenya with high HIV prevalence during a period of rapid HIV services scale-up. DESIGN: Adult medical chart data were abstracted at health facilities providing HIV care/ART to residents of a Health and Demographic Surveillance System (HDSS) and linked with HDSS demographic and mortality data. METHODS: We evaluated secular trends in patient characteristics across enrollment years and estimated proportions of HIV-positive adult residents receiving care. We evaluated adult (18-64 years) population mortality trends using verbal autopsy findings. RESULTS: From 2003-2008, 5,421 HDSS-resident adults enrolled in HIV care; 61.4% (n = 3,331) were linked to HDSS follow-up data. As the number of facilities expanded from 1 (2003) to 17 (2008), receipt of HIV services by HIV-positive residents increased from <1% to 29.5%, andART coverage reached 64.0% of adults with CD4 <250. The proportion of patients with WHO stage 4 at enrolment fell from 20.4% to 1.9%, and CD4 testing at enrolment increased from 1.0% to 53.4%. Population-level mortality rates for adults declined 34% for allcauses, 26% for AIDS/tuberculosis, and 47% for other infectious diseases; non-infectious disease mortality rates remained constant. CONCLUSIONS: The initial years of rapid HIV service expansion coincided with a drop in adult mortality by a third. Continued expansion of population access to HIV clinical services, including ART, and program quality improvements will be necessary to achieve further progress in reducing HIV-related morbidity and mortality. |
Tuberculosis among children in Kenya: epidemiology and impact of HIV in two provinces
Cavanaugh J , Genga K , Marigu I , Laserson K , Ackers M , Cain K . J Trop Pediatr 2011 58 (4) 292-6 We collected clinical register data on children in two provinces of Kenya and conducted bivariate and multivariate analyses to assess characteristics associated with death. Among 987 children with tuberculosis (TB), pulmonary disease was diagnosed in 689 (70%) children. Final outcomes were known for 830 children, 40 (5%) of whom died during TB treatment. HIV test results were available for 670 (68%) children; 371 (55%) of whom tested positive. Only 63 of 134 (47%) of children <1 year were tested for HIV. There were no data on CD4 or anti-retroviral use. The relative risk for death for HIV-infected children compared to HIV-uninfected children was 9.3 for children <1 year [95% confidence interval (CI) 1.2-69.2], 3.9 for children aged 1-4 (95% CI 0.9-17.7) and 0.9 for children aged 5-14 (95% CI 0.3-2.6). In Kenya, HIV infection in children with TB is common, and our data suggest that HIV is particularly deadly in TB patients <1 year, the group with the lowest rate of testing. Poor data recording and reporting limit our understanding of TB in this age group. Expansion of HIV testing may improve survival, and more complete data recording and reporting will enhance our understanding of pediatric TB. |
Knowing a sexual partner is HIV-1-uninfected is associated with higher condom use among HIV-1-infected adults in Kenya
Benki-Nugent S , Chung MH , Ackers M , Richardson BA , McGrath CJ , Kohler P , Thiga J , Attwa M , John-Stewart GC . Sex Transm Dis 2011 38 (9) 808-10 The relation between awareness of sexual partner's HIV serostatus and unprotected sex was examined in HIV clinic enrollees. Increased condom use was associated with knowing that a partner was HIV-negative (adjusted odds ratio = 5.99; P < 0.001) versus not knowing partner's status. Partner testing may increase condom use in discordant couples. |
Piloting the use of personal digital assistants for tuberculosis and human immunodeficiency virus surveillance, Kenya, 2007
Auld AF , Wambua N , Onyango J , Marston B , Namulanda G , Ackers M , Oluoch T , Karisa A , Hightower A , Shiraishi RW , Nakashima A , Sitienei J . Int J Tuberc Lung Dis 2010 14 (9) 1140-6 SETTING: Improved documentation of human immunodeficiency virus (HIV) testing and care among tuberculosis (TB) patients is needed to strengthen TB-HIV programs. In 2007, Kenya piloted the use of personal digital assistants (PDAs) instead of paper registers to collect TB-HIV surveillance data from TB clinics. OBJECTIVE: To evaluate the acceptability, data quality and usefulness of PDAs. DESIGN: We interviewed four of 31 district coordinators who collected data in PDAs for patients initiating TB treatment from April to June 2007. In 10 of 93 clinics, we randomly selected patient records for comparison with corresponding records in paper registers or PDAs. Using Cochran-Mantel-Haenszel tests, we compared missing data proportions in paper registers with PDAs. We evaluated PDA usefulness by analyzing PDA data from all 93 clinics. RESULTS: PDAs were well accepted. Patient records were more frequently missing (28/97 vs. 1/112, P < 0.001) and data fields more frequently incomplete (148/1449 vs. 167/2331, P = 0.03) in PDAs compared with paper registers. PDAs, however, facilitated clinic-level analyses: 48/93 (52%) clinics were not reaching the targets of testing ≥80% of TB patients for HIV, and 8 (9%) clinics were providing <80% of TB-HIV co-infected patients with cotrimoxazole (CTX). CONCLUSION: PDAs had high rates of missing data but helped identify clinics that were undertesting for HIV or underprescribing CTX. |
- Page last reviewed:Feb 1, 2024
- Page last updated:Mar 21, 2025
- Content source:
- Powered by CDC PHGKB Infrastructure