Last data update: Dec 09, 2024. (Total: 48320 publications since 2009)
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Query Trace: Tanifum P[original query] |
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Progress toward measles elimination - African Region, 2017-2021
Masresha BG , Hatcher C , Lebo E , Tanifum P , Bwaka AM , Minta AA , Antoni S , Grant GB , Perry RT , O'Connor P . MMWR Morb Mortal Wkly Rep 2023 72 (36) 985-991 Worldwide, measles remains a major cause of disease and death; the highest incidence is in the World Health Organization African Region (AFR). In 2011, the 46 AFR member states established a goal of regional measles elimination by 2020; this report describes progress during 2017-2021. Regional coverage with a first dose of measles-containing vaccine (MCV) decreased from 70% in 2017 to 68% in 2021, and the number of countries with ≥95% coverage decreased from six (13%) to two (4%). The number of countries providing a second MCV dose increased from 27 (57%) to 38 (81%), and second-dose coverage increased from 25% to 41%. Approximately 341 million persons were vaccinated in supplementary immunization activities, and an estimated 4.5 million deaths were averted by vaccination. However, the number of countries meeting measles surveillance performance indicators declined from 26 (62%) to nine (22%). Measles incidence increased from 69.2 per 1 million population in 2017 to 81.9 in 2021. The number of estimated annual measles cases and deaths increased 22% and 8%, respectively. By December 2021, no country in AFR had received verification of measles elimination. To achieve a renewed regional goal of measles elimination in at least 80% of countries by 2030, intensified efforts are needed to recover and surpass levels of surveillance performance and coverage with 2 MCV doses achieved before the COVID-19 pandemic. |
Field investigation of high reported non-neonatal tetanus burden in Uganda, 2016-2017
Casey RM , Nguna J , Opar B , Ampaire I , Lubwama J , Tanifum P , Zhu BP , Kisakye A , Kabwongera E , Tohme RA , Dahl BA , Ridpath AD , Scobie HM . Int J Epidemiol 2023 52 (4) 1150-1162 BACKGROUND: Despite providing tetanus-toxoid-containing vaccine (TTCV) to infants and reproductive-age women, Uganda reports one of the highest incidences of non-neonatal tetanus (non-NT). Prompted by unusual epidemiologic trends among reported non-NT cases, we conducted a retrospective record review to see whether these data reflected true disease burden. METHODS: We analysed nationally reported non-NT cases during 2012-2017. We visited 26 facilities (14 hospitals, 12 health centres) reporting high numbers of non-NT cases (n = 20) or zero cases (n = 6). We identified non-NT cases in facility registers during 1 January 2016-30 June 2017; the identified case records were abstracted. RESULTS: During 2012-2017, a total of 24 518 non-NT cases were reported and 74% were ≥5 years old. The average annual incidence was 3.43 per 100 000 population based on inpatient admissions. Among 482 non-NT inpatient cases reported during 1 January 2016-30 June 2017 from hospitals visited, 342 (71%) were identified in facility registers, despite missing register data (21%). Males comprised 283 (83%) of identified cases and 60% were ≥15 years old. Of 145 cases with detailed records, 134 (92%) were clinically confirmed tetanus; among these, the case-fatality ratio (CFR) was 54%. Fourteen cases were identified at two hospitals reporting zero cases. Among >4000 outpatient cases reported from health centres visited, only 3 cases were identified; the remainder were data errors. CONCLUSIONS: A substantial number of non-NT cases and deaths occur in Uganda. The high CFR and high non-NT burden among men and older children indicate the need for TTCV booster doses across the life course to all individuals as well as improved coverage with the TTCV primary series. The observed data errors indicate the need for data quality improvement activities. |
Progress and barriers towards maternal and neonatal tetanus elimination in the remaining 12 countries: a systematic review
Yusuf N , Raza AA , Chang-Blanc D , Ahmed B , Hailegebriel T , Luce RR , Tanifum P , Masresha B , Faton M , Omer MD , Farrukh S , Aung KD , Scobie HM , Tohme RA . Lancet Glob Health 2021 9 (11) e1610-e1617 This systematic review assessed the progress and barriers towards maternal and neonatal tetanus elimination in the 12 countries that are yet to achieve elimination, globally. Coverage of at least 80% (the coverage level required for elimination) was assessed among women of reproductive age for five factors: (1) at least two doses of tetanus toxoid-containing vaccine, (2) protection at birth, (3) skilled birth attendance, (4) antenatal care visits, and (5) health facility delivery. A scoping review of the literature and data from Demographic and Health Surveys and Multiple Indicator Cluster Surveys provided insights into the barriers to attaining maternal and neonatal tetanus elimination. Findings showed that none of the 12 countries attained at least 80% coverage for women of reproductive age receiving at least two doses of tetanus toxoid-containing vaccine or protection at birth according to the data from Demographic and Health Surveys or Multiple Indicator Cluster Surveys. Barriers to maternal and neonatal tetanus elimination were mostly related to health systems and socioeconomic factors. Modification to existing maternal and neonatal tetanus elimination strategies, including innovations, will be required to accelerate maternal and neonatal tetanus elimination in these countries. |
Evaluating a mobile phone-delivered text message reminder intervention to reduce infant vaccination dropout in Arua, Uganda: Protocol for a randomized controlled trial
Ehlman DC , Magoola J , Tanifum P , Wallace AS , Behumbiize P , Mayanja R , Luzze H , Yukich J , Daniels D , Mugenyi K , Baryarama F , Ayebazibwe N , Conklin L . JMIR Res Protoc 2021 10 (2) e17262 BACKGROUND: Globally, suboptimal vaccine coverage is a public health concern. According to Uganda's 2016 Demographic and Health Survey, only 49% of 12- to 23-month-old children received all recommended vaccinations by 12 months of age. Innovative ways are needed to increase coverage, reduce dropout, and increase awareness among caregivers to bring children for timely vaccination. OBJECTIVE: This study evaluates a personalized, automated caregiver mobile phone-delivered text message reminder intervention to reduce the proportion of children who start but do not complete the vaccination series for children aged 12 months and younger in select health facilities in Arua district. METHODS: A two-arm, multicenter, parallel group randomized controlled trial was conducted in four health facilities providing vaccination services in and around the town of Arua. Caregivers of children between 6 weeks and 6 months of age at the time of their first dose of pentavalent vaccine (Penta1; containing diphtheria, tetanus, pertussis, hepatitis B, and Haemophilus influenzae type b antigens) were recruited and interviewed. All participants received the standard of care, defined as the health worker providing child vaccination home-based records to caregivers as available and providing verbal instruction of when to return for the next visit. At the end of each day, caregivers and their children were randomized by computer either to receive or not receive personalized, automated text message reminders for their subsequent vaccination visits according to the national schedule. Text message reminders for Penta2 were sent 2 days before, on the day of, and 2 days after the scheduled vaccination visit. Reminders for Penta3 and the measles-containing vaccine were sent on the scheduled day of vaccination and 5 and 7 days after the scheduled day. Study personnel conducted postintervention follow-up interviews with participants at the health facilities during the children's measles-containing vaccine visit. In addition, focus group discussions were conducted to assess caregiver acceptability of the intervention, economic data were collected to evaluate the incremental costs and cost-effectiveness of the intervention, and health facility record review forms were completed to capture service delivery process indicators. RESULTS: Of the 3485 screened participants, 1961 were enrolled from a sample size of 1962. Enrollment concluded in August 2016. Follow-up interviews of study participants, including data extraction from the children's vaccination cards, data extraction from the health facility immunization registers, completion of the health facility record review forms, and focus group discussions were completed by December 2017. The results are expected to be released in 2021. CONCLUSIONS: Prompting health-seeking behavior with reminders has been shown to improve health intervention uptake. Mobile phone ownership continues to grow in Uganda, so their use in vaccination interventions such as this study is logical and should be evaluated with scientifically rigorous study designs. TRIAL REGISTRATION: ClinicalTrials.gov NCT04177485; https://clinicaltrials.gov/ct2/show/NCT04177485. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/17262. |
Building health workforce capacity for planning and monitoring through the Strengthening Technical Assistance for routine immunization training (START) approach in Uganda
Ward K , Stewart S , Wardle M , Sodha SV , Tanifum P , Ayebazibwe N , Mayanja R , Luzze H , Ehlman DC , Conklin L , Abbruzzese M , Sandhu HS . Vaccine 2019 37 (21) 2821-2830 INTRODUCTION: The Global Vaccine Action Plan identifies workforce capacity building as a key strategy to achieve strong immunization programs. The Strengthening Technical Assistance for Routine Immunization Training (START) approach aimed to utilize practical training methods to build capacity of district and health center staff to implement routine immunization (RI) planning and monitoring activities, as well as build supportive supervision skills of district staff. METHODS: First implemented in Uganda, the START approach was executed by trained external consultants who used existing tools, resources, and experiences to mentor district-level counterparts and, with them, conducted on-the-job training and mentorship of health center staff over several site visits. Implementation was routinely monitored using daily activity reports, pre and post surveys of resources and systems at districts and health centers and interviews with START consultants. RESULTS: From July 2013 through December 2014 three START teams of four consultants per team, worked 6months each across 50 districts in Uganda including the five divisions of Kampala district (45% of all districts). They conducted on-the-job training in 444 selected under-performing health centers, with a median of two visits to each (range 1-7, IQR: 1-3). More than half of these visits were conducted in collaboration with the district immunization officer, providing the opportunity for mentorship of district immunization officers. Changes in staff motivation and awareness of challenges; availability and completion of RI planning and monitoring tools and systems were observed. However, the START consultants felt that potential durability of these changes may be limited by contextual factors, including external accountability, availability of resources, and individual staff attitude. CONCLUSIONS: Mentoring and on-the-job training offer promising alternatives to traditional classroom training and audit-focused supervision for building health workforce capacity. Further evidence regarding comparative effectiveness of these strategies and durability of observed positive change is needed. |
Enhancing workforce capacity to improve vaccination data quality, Uganda
Ward K , Mugenyi K , Benke A , Luzze H , Kyozira C , Immaculate A , Tanifum P , Kisakye A , Bloland P , MacNeil A . Emerg Infect Dis 2017 23 (13) S85-93 In Uganda, vaccine dose administration data are often not available or are of insufficient quality to optimally plan, monitor, and evaluate program performance. A collaboration of partners aimed to address these key issues by deploying data improvement teams (DITs) to improve data collection, management, analysis, and use in district health offices and health facilities. During November 2014-September 2016, DITs visited all districts and 89% of health facilities in Uganda. DITs identified gaps in awareness and processes, assessed accuracy of data, and provided on-the-job training to strengthen systems and improve healthcare workers' knowledge and skills in data quality. Inaccurate data were observed primarily at the health facility level. Improvements in data management and collection practices were observed, although routine follow-up and accountability will be needed to sustain change. The DIT strategy offers a useful approach to enhancing the quality of health data. |
Factors contributing to measles transmission during an outbreak in Kamwenge District, Western Uganda, April to August 2015
Nsubuga F , Bulage L , Ampeire I , Matovu JKB , Kasasa S , Tanifum P , Riolexus AA , Zhu BP . BMC Infect Dis 2018 18 (1) 21 BACKGROUND: In April 2015, Kamwenge District, western Uganda reported a measles outbreak. We investigated the outbreak to identify potential exposures that facilitated measles transmission, assess vaccine effectiveness (VE) and vaccination coverage (VC), and recommend prevention and control measures. METHODS: For this investigation, a probable case was defined as onset of fever and generalized maculopapular rash, plus >/=1 of the following symptoms: Coryza, conjunctivitis, or cough. A confirmed case was defined as a probable case plus identification of measles-specific IgM in serum. For case-finding, we reviewed patients' medical records and conducted in-home patient examination. In a case-control study, we compared exposures of case-patients and controls matched by age and village of residence. For children aged 9 m-5y, we estimated VC using the percent of children among the controls who had been vaccinated against measles, and calculated VE using the formula, VE = 1 - ORM-H, where ORM-H was the Mantel-Haenszel odds ratio associated with having a measles vaccination history. RESULTS: We identified 213 probable cases with onset between April and August, 2015. Of 23 blood specimens collected, 78% were positive for measles-specific IgM. Measles attack rate was highest in the youngest age-group, 0-5y (13/10,000), and decreased as age increased. The epidemic curve indicated sustained propagation in the community. Of the 50 case-patients and 200 controls, 42% of case-patients and 12% of controls visited health centers during their likely exposure period (ORM-H = 6.1; 95% CI = 2.7-14). Among children aged 9 m-5y, VE was estimated at 70% (95% CI: 24-88%), and VC at 75% (95% CI: 67-83%). Excessive crowding was observed at all health centers; no patient triage-system existed. CONCLUSIONS: The spread of measles during this outbreak was facilitated by patient mixing at crowded health centers, suboptimal VE and inadequate VC. We recommended emergency immunization campaign targeting children <5y in the affected sub-counties, as well as triaging and isolation of febrile or rash patients visiting health centers. |
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