^a)There was a significant difference in B19V and PARV4 according to severity of hemophilia, between the moderate and mild groups.

^b)There was a significantly greater prevalence of B19V among participants aged 20–40 years, but a significant PARV4 prevalence in those aged <20 years, compared with other age groups.

Abbreviations: B19V, human parvovirus B19; HCV, hepatitis C virus; N, number; PARV4, human parvovirus 4.