KRT88P and infection: Our report showed that 98.5% of DHCWs remained uninfected by HBV after vaccine administration, whereas one in four non‐vaccinated workers had a previous HBV infection (25.4%), characterized by HBsAg‐negative and HB core antibody (anti‐HBc)‐positive serology, indicating a high infection rate (Nagao et al., 2008).