Matings with a parent positive for infectious agent (HBgAg) in a Greek population show an elevated sex ratio (64% males) compared with matings of negative parents (53% males). In Melanesian populations, however, the sex ratio is decreased when the mother is positive and increased when the father is positive. Thus the presence of HBsAg is associated with alterations in the live birth sex ratio. Altered sex ratios, in turn, affect population reproduction rates.
Hesser, J E.; Blumberg, B S.; and Drew, J S.
"Hepatitis B Surface Antigen, Fertility and Sex Ratio: Implications for Health Planning,"
1, Article 7.
Available at: https://digitalcommons.wayne.edu/humbiol/vol48/iss1/7