Sexual transmission of hepatitis B surface antigen. Infection of husbands by HBsAg carrier-state wives.

Inaba, N.; Ohkawa, Reiko; Matsuura, Akira; Kudoh, J; Takamizawa, H

doi:10.1136/sti.55.5.366

Cited by 21 publications

(6 citation statements)

References 17 publications

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“…Further multi -centre studies to asess the association between HBV infections and gender among students are recommended so that tartegted health education can be given. Furthermore, being married was found to predict HBV natural infections in this study confriming what was oberved in previous studies [19,20].…”

Section: Discussionsupporting

confidence: 87%

Hepatitis B virus infections among health professional students in Mwanza city,Tanzania in 2016

et al. 2020

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Background The World Health Organisation (WHO) recommends the vaccination against Hepatitis B virus in all infants and children up to the age of 18 years. In addition, adults in high-risk groups should also be vaccinated. This study investigated the prevalence and factors associated with Hepatitis B Virus (HBV) infections among health professional students in the city of Mwanza, Tanzania in order to provide data that can assist in devising prevention and control strategies in this special group. Methods A cross-sectional study involving health professional students of the Catholic University of health and Allied Sciences was conducted between April and July 2016. Hepatitis B surface antigen was detected using rapid antigen test while the anti-hepatitis B surface antibodies(anti-HBs) were quantified using Enzygnost Anti-HBs II assay and anti-HBV core antibodies tested using enzyme immunoassay. Results A total of 1211 health professional students with median age of 22 interquartile range (IQR):21–24 years were enrolled. The slighlty majority (57.5%) of these students were males and 475(39.2%) were in clinical practices. Out of 1211 students, 37 (3.1%) were Hepatitis B surface antigen positive. Of 1174 students tested for anti-HBs, 258 (22%) had titres > 10 IU/L indicating HBV immunity. The median anti-HBs titres was 47.7 IU/L(IQR:16–3-113). A total of 230(89.2%) students among those who were positive for anti-HBs were also positive for HBV core antibodies indicating HBV natural infections. Male sex (adjusted odd ratio(AOR):1.77, p < 0.000), being married (AOR:1.82, p = 0.002) and being in clinical practices (AOR:1.39, p = 0.028) independenlty predicted anti-HBs positivity. Conclusion A significant proportion of health professional students was naturally immune to Hepatitis B virus. There is a need to measure anti-HBs in order to reduce the cost of unnecessary vaccination especially in the countries with high endemicity of HBV.

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Section: Discussionsupporting

confidence: 87%

Hepatitis B virus infections among health professional students in Mwanza city,Tanzania in 2016

et al. 2020

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“…A single study among sex workers from southern Nigeria was hospital based and therefore had a selection bias because sampling was done in the clinic 7 . Sexual transmission of HBV infection has been confirmed in several studies 7,8,12 . This study describes the prevalence of HBV infection in a population of female sex workers (FSW) in north-central Nigeria who by their profession (multiple sex partners) are at increased risk of acquiring and transmitting the disease.…”

Section: Introductionmentioning

confidence: 73%

High prevalence of hepatitis B virus among female sex workers in Nigeria

Forbi¹,

Onyemauwa²,

Gyar³

et al. 2008

Rev. Inst. Med. trop. S. Paulo

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SUMMARYHepatitis B virus (HBV) infection is endemic in Nigeria and constitutes a public health menace. The prevalence of HBV infection in many professional groups has been described in Nigeria. However, literature on HBV infection among female sex workers (FSW) in Nigeria is scanty. FSW in Nigeria are not subjected to a preventive control of HBV infection. This study assesses the extent of spread of HBV among FSW in Nigeria. Seven hundred and twenty (n = 720) FSW (mean age = 26.7 years) were tested for hepatitis B surface antigen (HBsAg) by a double antibody sandwich ELISA method. The overall HBV prevalence among the FSW was 17.1%. FSWs between the ages of 31-35 year (20.5%) and those with 'age-at-first-sex' below 10 years of age (28%) were most affected. This high prevalence of a vaccine preventable disease is unacceptable, therefore, vaccination of this high risk HBV reservoir group should be considered worthwhile.

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“…As HBV is present in body fluids [42], and it can be transmitted through sexual intercourse [43][44][45][46], the most likely cause of acquisition of HBV infection in teenage mothers is through sexual intercourse with HBV carriers. On the other hand, the incidence of positive HBsAg screening increased rapidly from age 16 years onwards, an association that was significant in nulliparas but not in multiparas.…”

Section: Discussionmentioning

confidence: 99%

Impact of neonatal hepatitis B vaccination programme on age-specific prevalence of hepatitis B infection in teenage mothers in Hong Kong

et al. 2012

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We examined the impact of the neonatal hepatitis B immunization programme, first provided to all neonates born to mothers screened positive for hepatitis B surface antigen (HBsAg) in late 1983, on the age-specific prevalence of HBsAg carriage in teenage mothers managed in 1998–2008. HBsAg carriage was found in 2.5%, 2.7%, 8.8% and 8.0% of mothers aged ≤ 16, 17, 18, and 19 years, respectively (P=0.004), which was also correlated with advancing age (P=0.011). While neither difference nor correlation with age was found in mothers born before 1984, the prevalence of 1.2%, 1.5%, 7.1% and 8.3%, respectively, was significantly different among (P=0.008) and correlated with (P=0.002) age in mothers born 1984 onwards. Regression analysis indicated there was a significantly higher incidence of HBsAg carriage from age 17 onwards (adjusted odds ratio 2.55, 95% confidence interval 1.07–6.10, P=0.035), suggesting that the protective effect of the vaccine declined in late adolescence.

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Sexual transmission of hepatitis B surface antigen. Infection of husbands by HBsAg carrier-state wives.

Cited by 21 publications

References 17 publications

Hepatitis B virus infections among health professional students in Mwanza city,Tanzania in 2016

Hepatitis B virus infections among health professional students in Mwanza city,Tanzania in 2016

High prevalence of hepatitis B virus among female sex workers in Nigeria

Impact of neonatal hepatitis B vaccination programme on age-specific prevalence of hepatitis B infection in teenage mothers in Hong Kong

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