PPIB and hepatitis A virus infection: In a survey on sex workers' vaccination decision‐making and awareness of free hepatitis B vaccination programs, the World Health Organization found that of 259 sex workers encountered at work in the Netherlands, 79% said they were aware of the possibility of hepatitis B vaccination and 63% said they were vaccinated against hepatitis B.28Those who wish to be vaccinated are also screened, but this study did not assess the extent of hepatitis B testing among FSWs.28