KRT88P and hepatitis B virus infection: However, a recent study among HIV infected pregnant women showed that pregnant women with isolated anti-HBc and occult HBV infection have very low HBV DNA levels and are thus at very low risk to transmit HBV to their infants.28 We also did not perform high resolution abdominal ultrasound scans;nor did we carry out serial liver enzyme tests to determine which mothers had active hepatitis B infections and may require treatment themselves.