BRD2 and hepatitis B virus infection: Although there are arguments on the value of individual NAT assay (ID-NAT) over mini-pool (MP) NAT, MP-NAT has been proved to be more effective than HBsAg testing and capable of excluding infected donors with OBI and in the window periods.25 Hepatitis B vaccination is already widespread in the country to “At-risk professional individuals” and incorporated into the childhood immunization programs to reduce HBV in the community.