KRT88P and hepatitis B virus infection: Among all FSWs tested for HIV at screening, the prevalence of active hepatitis B was 4.5% and similar among both HIV‐positive and ‐negative women, whereas 69.9% were anti‐HBc positive (83.8% among HIV‐positive and 65.0% among HIV‐negative, p < 0.001), indicating the occurrence of past or current hepatitis B infection.