scholarly journals Prevalence of Hepatitis B Vaccination Coverage and Serologic Evidence of Immunity Among US-Born Children and Adolescents From 1999 to 2016

2020 ◽  
Vol 3 (11) ◽  
pp. e2022388
Author(s):  
Michael H. Le ◽  
Yee Hui Yeo ◽  
Samuel So ◽  
Ed Gane ◽  
Ramsey C. Cheung ◽  
...  
Keyword(s):  
Hepatitis B ◽  
Children And Adolescents ◽  
Vaccination Coverage ◽  
Hepatitis B Vaccination ◽  
Serologic Evidence

Increasing hepatitis B vaccination coverage of healthcare workers — global lessons for South Africa

2021 ◽  
Vol 71 ◽  
pp. 6-12
Author(s):  
Rosemary Joyce Burnett ◽  
Angela Dramowski ◽  
Edina Amponsah-Dacosta ◽  
Johanna Catharina Meyer
Keyword(s):  
South Africa ◽  
Hepatitis B ◽  
Vaccination Coverage ◽  
Healthcare Workers ◽  
Hepatitis B Vaccination

MODELING THE IMPACT OF AWARENESS CREATED BY MEDIA CAMPAIGNS ON VACCINATION COVERAGE IN A VARIABLE POPULATION

2014 ◽  
Vol 22 (02) ◽  
pp. 249-270 ◽  
Author(s):  
ANUPAMA SHARMA ◽  
A. K. MISRA
Keyword(s):  
Hepatitis B ◽  
Vaccination Coverage ◽  
Total Population ◽  
Hepatitis B Vaccination ◽  
Preventive Strategy ◽  
Successful Implementation ◽  
Global Public Health ◽  
Media Campaigns ◽  
Model Stability ◽  
The Impact

Vaccines are a core component of any preventive strategy designed to ensure the global public health. A major factor influencing the successful implementation of any immunization program is awareness and public acceptance of the vaccine. The present study focuses on potential impacts of awareness created by media campaigns on vaccination coverage of hepatitis B. In this paper, a SIR model with vital dynamics in a population of varying size is investigated, which couples hepatitis B vaccination and awareness created by media within a single framework. It is assumed that media campaigns propagate awareness about measures requisite for escaping the chances of contracting hepatitis B. The awareness created by media motivates people to get vaccinated and attain full immunization against hepatitis B virus. For analyzing the model, stability theory of differential equations is employed. First, equilibria of the system comprising fractions of the population are obtained and their stability behavior is discussed. Then the asymptotic behavior of total population is discussed in detail. Three threshold parameters R0, R1and R2governing the dynamics of infection and total population are also affirmed. The findings of numerical simulations are also in line with analytically obtained results.

scholarly journals Impact of hepatitis B vaccine in Tunisia 20 years after its introduction

2019 ◽  
Vol 29 (Supplement_4) ◽  
Author(s):  
A Lahchaichi ◽  
M Ben Hadj ◽  
H Bouguerra ◽  
K Talmoudi ◽  
A Bahrini ◽  
...  
Keyword(s):  
Hepatitis B ◽  
Vaccination Coverage ◽  
Vaccine Effectiveness ◽  
Coverage Rate ◽  
Hbv Infection ◽  
Hepatitis B Vaccination ◽  
Reference Laboratory ◽  
Test Results ◽  
Vaccination Coverage Rate ◽  
The Impact

Abstract Introduction Vaccination against hepatitis B represents the most effective preventive measure to reduce the global impact of this infection. In Tunisia hepatitis B vaccination was introduced for health professionals in 1992 and for the general population in 1995. The objectives of this study were to evaluate the impact of vaccination twenty years after its introduction. Methods It was a descriptive study of data provided by the national survey of prevalence of Hepatitis B in Tunisia, which was a household-based study conducted in 2015. Blood samples sent to the reference laboratory to test markers of hepatitis B virus infection. The Vaccine effectiveness rate was calculated using the following formula: VE = 1 - Odds-ratio (OR), where OR = ratio of odds of being vaccinated among subjects with positive HBsAg test results to the odds of being vaccinated among subjects with negative HBsAg test results. Results Approximately a quarter of our population reported having been vaccinated against HBV, a coverage rate of 26.9%. Among subjects above 20 years of age, this rate was 85.3%. Besides, 83.7% of vaccinated subjects had received the three required doses of the HBV vaccine. Analysis of vaccination status by great regions of the country showed that the vaccination coverage rate was higher in the southern region. Regarding HBsAg prevalence, the rate was significantly higher among unvaccinated subjects 0.3% vs 2.2% in those vaccinated (OR = 0.11 [0.07-0.18]). We found that among vaccinated subjects, the serologic response rate at vaccination was only 63.2% which represented 16.2% of the total population. The vaccine effectiveness indicated that vaccination reduced by 88.6% the risk of HBV infection. Conclusions These results demonstrate that vaccination against hepatitis B introduced in the national immunization schedule since 1995 has reduced the infection although the vaccination coverage rate remains below 90%. Key messages Importance of vaccination that reduced by 88.6% the risk of HBV infection. More effort required to raise awareness about vaccination against HBV.

scholarly journals Hepatitis B vaccination coverage in patients with diabetes mellitus

2016 ◽  
Vol 50 (2) ◽  
pp. 255-262 ◽  
Author(s):  
Clarissa Cordeiro Alves Arrelias ◽  
Fernando Bellissimo-Rodrigues ◽  
Letícia Cristina Lourenço de Lima ◽  
Anderson Soares da Silva ◽  
Nereida Kilza da Costa Lima ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Hepatitis B ◽  
Vaccination Coverage ◽  
Educational Level ◽  
Health Department ◽  
Cross Sectional Study ◽  
Hepatitis B Vaccination ◽  
Cross Sectional ◽  
Patients With Diabetes

Abstract OBJECTIVE Analyze the factors associated with full hepatitis B vaccination (three doses) in patients with diabetes mellitus. METHOD Cross-sectional study, conducted in a health unit in a city in the state of São Paulo, with 255 patients on outpatient follow-up, in 2014. Data were obtained from the computerized system of the Municipal Health Department and via a structured questionnaire. A logistic regression model was used for analysis. RESULTS Full hepatitis B vaccination was noted in 13.7% of the patients and shown to be directly associated with their educational level (OR=1.30; CI: 1.07-1.57) and current or previous work as a health professional (OR=3.21; CI: 1.16-8.89). CONCLUSION Hepatitis B vaccination coverage was found to be low in patients with diabetes mellitus, indicating their vulnerability to this serious and potentially fatal disease. Higher educational level and working in the field of health were associated with better vaccination coverage.

scholarly journals Hepatitis B marker seroprevalence and vaccination coverage in adolescents in the City of Itajaí, State of Santa Catarina, Southern Brazil, in 2008

2011 ◽  
Vol 44 (4) ◽  
pp. 416-419 ◽  
Author(s):  
Gabriela Chiochetta Tonial ◽  
Ana Maria Passos ◽  
Andréa do Livramento ◽  
Natália Gazzoni Scaraveli ◽  
Anna Paula de Borba Batschauer ◽  
...  
Keyword(s):  
Hepatitis B ◽  
Secondary School ◽  
Vaccination Coverage ◽  
Secondary School Students ◽  
Age Groups ◽  
Hepatitis B Vaccination ◽  
Prevention Strategies ◽  
School Students ◽  
Santa Catarina ◽  
The City

INTRODUCTION: Hepatitis B infection constitutes an important cause of morbidity and mortality worldwide. In Brazil, however, the current epidemiological situation is not clear. Considering the importance of establishing this prevalence, the aim of this study was to determine the prevalence of HBV markers in voluntary adolescents, junior high (secondary school) students, in the City of Itajaí, State of Santa Catarina, Brazil. METHODS: A seroepidemiological, transverse study was conducted with 353 randomly chosen adolescents from elementary school in 2008. Blood samples were analyzed for HBsAg, anti-HBc and anti-HBs. All analyses were conducted by automated microparticle enzyme immunosorbent assay (Abbott®, AxSYM system, Deerfield, IL, USA), according to the manufacturer's instructions. RESULTS: The prevalence of HBsAg was 0.6% (CI 95% 0.1 - 2.0), that of anti-HBc was 1.1% (CI 95% 0.3 - 2.9) and that of detectable anti-HBs was 83.6% (CI 95% 79.3 - 87.3). Hepatitis B vaccination coverage was 97.5% (CI 95% 95.2 - 98.8). CONCLUSIONS: These results demonstrate the success of the vaccination program against hepatitis B in the region studied and indicate that prevention strategies must be maintained and, if possible, expanded to contribute to the establishment of positive prevalence rates in all age groups.

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