scholarly journals Can Hepatitis B Mothers Account for the Number of Missing Women? Evidence from Three Million Newborns in Taiwan

2008 ◽  
Vol 98 (5) ◽  
pp. 2259-2273 ◽  
Author(s):  
Ming-Jen Lin ◽  
Ming-Ching Luoh
Keyword(s):  
Hepatitis B Virus ◽  
Hepatitis B ◽  
Sex Ratio ◽  
Birth Order ◽  
Son Preference ◽  
Sex Ratio At Birth ◽  
Asian Countries ◽  
Male Birth ◽  
B Virus ◽  
Missing Women

The “missing women” phenomenon in many Asian countries has previously been regarded as the result of son preference. However, some studies have argued half of the missing women can be explained by infection with Hepatitis B virus (HBV). We demonstrate that the probability of having a male birth is only slightly higher for HBV mothers than for mothers without HBV. The sex ratio at birth rises for the higher birth order and that in families where the first two children are female. Our findings suggest that HBV status has little impact on the missing women phenomenon. (JEL I12, J16)

Chronic hepatitis B virus infection in Asian countries

2000 ◽  
Vol 15 (12) ◽  
pp. 1356-1361 ◽  
Author(s):  
I Merican ◽  
R Guan ◽  
D Amarapuka ◽  
Mj Alexander ◽  
A Chutaputti ◽  
...  
Keyword(s):  
Chronic Hepatitis ◽  
Hepatitis B Virus ◽  
Virus Infection ◽  
Hepatitis B ◽  
Chronic Hepatitis B ◽  
Hepatitis B Virus Infection ◽  
Asian Countries ◽  
Chronic Hepatitis B Virus ◽  
B Virus

Birth order and risk of hepatocellular carcinoma in chronic carriers of hepatitis B virus: a case-control study in The Gambia

2015 ◽  
Vol 35 (10) ◽  
pp. 2318-2326 ◽  
Author(s):  
Yusuke Shimakawa ◽  
Maud Lemoine ◽  
Christian Bottomley ◽  
Harr Freeya Njai ◽  
Gibril Ndow ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Hepatitis B Virus ◽  
Hepatitis B ◽  
Birth Order ◽  
Case Control Study ◽  
Case Control ◽  
The Gambia ◽  
B Virus ◽  
Control Study

Sex ratio in offspring of mothers with hepatitis b virus

2000 ◽  
Vol 70 ◽  
pp. B130-B130
Author(s):  
B.-H. Chene ◽  
T.Y. Hsu ◽  
C.Y. Yang ◽  
C.Y. Ou ◽  
S.S. Tsai ◽  
...  
Keyword(s):  
Hepatitis B Virus ◽  
Hepatitis B ◽  
Sex Ratio ◽  
B Virus

scholarly journals Genetic construction of HBsAg gene subgenotype B3 in Lactococcus lactis as hepatitis B vaccine candidate

2021 ◽  
Vol 948 (1) ◽  
pp. 012071
Author(s):  
A Z Mustopa ◽  
H H Putri ◽  
Kusdianawati ◽  
B R Budiarto ◽  
A Kusumawati ◽  
...  
Keyword(s):  
Hepatitis B Virus ◽  
Hepatitis B ◽  
Lactococcus Lactis ◽  
Vaccine Candidate ◽  
Hepatitis B Surface Antigen ◽  
Host Cells ◽  
Virus Hepatitis ◽  
Asian Countries ◽  
E Coli ◽  
B Virus

Abstract Hepatitis B is an inflammatory liver disease caused by HBV (Hepatitis B Virus). Hepatitis B surface antigen (HBsAg) induces immune system forming antibodies. HBV subgenotype B3 is common in Asian Countries. Thus, the development of HBsAg subgenotype B3 vaccine was done because its prevalence is high in Indonesia (especially in Javanese) and other Asian countries. The research methods were preparation of the HBsAg gene subgenotype B3, cloning and transformation the HBsAg gene in Escherichia coli MC1061, and transformation in Lactococcus lactis (L. lactis). HBsAg gene subgenotype B3 was obtained from the pIDT-HBsAg subgenotype B3 plasmid. The HBsAg gene subgenotype B3 successfully cloned and transformed into E. coli MC1061 and L. lactis. The PCR results of the transformant E. coli MC1061 (pNZ8148-HBsAg subgenotype B3) colonies were found in colonies 8, 17, and 20 indicated by the presence of 1226 bps bands. 8 colonies were obtained from PCR results of L. lactis transformants (pNZ8148-HBsAg subgenotype B3). The construction of the HBsAg subgenotype B3 gene has 100% similarity compare to the hepatitis B virus isolated from Java on 1839. Therefore, the construction of pNZ8148-HBsAg subgenotype B3 using host cells L. lactis can be used as a vaccine candidate.

Child Gender and Parental Inputs: No More Son Preference in Korea?

2015 ◽  
Vol 105 (5) ◽  
pp. 638-643 ◽  
Author(s):  
Eleanor Jawon Choi ◽  
Jisoo Hwang
Keyword(s):  
Sex Ratio ◽  
South Korea ◽  
Private Education ◽  
Son Preference ◽  
Sex Ratio At Birth ◽  
Potential Bias ◽  
Asian Countries ◽  
Endogenous Fertility ◽  
Child Gender ◽  
Fertility Decisions

Sex ratio at birth remains highly skewed in Asian countries due to son preference. In South Korea, however, it has declined to the natural ratio. In this paper, we investigate whether son preference has disappeared in Korea by analyzing parents' time and monetary inputs by the sex of their child. We exploit randomness of the first child's sex to overcome potential bias from endogenous fertility decisions. Our findings show that mothers are more likely to work after having a girl, girls spend twice as much time as boys in housework activities, and parents spend more on private education for boys.

Hepatitis B virus and sex ratio of offspring

Science ◽  
1978 ◽  
Vol 201 (4357) ◽  
pp. 687-692 ◽  
Author(s):  
J. Drew ◽  
W. London ◽  
E. Lustbader ◽  
J. Hesser ◽  
B. Blumberg
Keyword(s):  
Hepatitis B Virus ◽  
Hepatitis B ◽  
Sex Ratio ◽  
B Virus
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