Context: Hepatitis B viral infection, specially in children, is an unsolved global health issue. National and international vaccination programs, as the main means to prevent this infection, have been operating for years. This meta-analysis study was launched to investigate the vaccination efficacy in under five-year-old children in Iran. Evidence Acquisition: In this research, all national databases including, SID, Magiran, Iran medex, Iran doc, and Medlib, as well as international databases, including PubMed, Medline, and ISI were searched for published articles associated with evaluation of seroconversion rates after hepatitis-B vaccination in Iranian children. The search was performed in the Persian and/or English language and in under five-year-old children in Iran. The variance of each study was calculated using the binomial distribution formula. The results of studies were combined using random-effects meta-analysis model. Data were analyzed using STATA version 12. Results: In the present research, 11 studies, performed from 2000 to 2017, were investigated. The number of samples in these 11 studies were 3063 children (1592 males and 1471 females). In the studies, the efficacy range of the hepatitis-B vaccine in under fiveyear-old children in Iran was 89% (95% CI: 86% -93%) with high heterogeneity (P value for heterogeneity was 0.001, I 2 = 92.9). Range of efficacy for males and females was 85% (95% CI: 78 to 91) and 88% (95% CI: 83 to 93), respectively. Conclusions: The hepatitis B virus (HBV) vaccination program in Iran seems to be highly effective although some questions, such as the effect of gender on responsiveness to vaccine and heterogeneity of different data, remain unclear.
BackgroundHIV infection significantly increases the risk of tuberculosis and this disease is one of the most common opportunistic infections in HIV Patients.ObjectivesThe aim of this study was to determine of the prevalence of tuberculosis and risk factor among HIV patients.Materials and MethodsIn this cross-sectional study, from September 2009 to September 2010, 71 HIV patients who referred to teaching hospital in Tehran, Capital Iran were enrolled. Records of patients that admitted to hospital at least once a year and have positive test for HIV with ELISA and Western Blot were assessed. TB diagnosis testes included clinical finding, chest X-Ray and culture positive sputum.Results74.6 % and 38 % of them had prison history and history of addiction respectively, 28.2% of subjects co- infected with HIV / TB and 40% of patients were under treatment with anti-retroviral drugs. There was relationship Between TB and CD4 counts below 200 cells per micro-liters (P = 0.003), age (P = 0.000), anti-retroviral drugs (P = 0.001), discharge status (P = 0.004), prison history (P = 0.002) and alcohol and smoking (P = 0.01).ConclusionsThe prevalence rate of TB / HIV among intravenous drug abusers and prisoners was high also the prevalence of tuberculosis among HIV patients.
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