We used comprehensive serodiagnostic methods (IgM, IgG, and IgG avidity) and PCR to study Merkel cell polyomavirus and trichodysplasia spinulosa-associated polyomavirus infections in children observed from infancy to adolescence. Comparing seroconversion intervals with previous and subsequent intervals, we found that primary infections with these 2 viruses were asymptomatic in childhood.
Keywords: Finland; Merkel cell polyomavirus; childhood; primary infection; serodiagnostics; trichodysplasia spinulosa-associated polyomavirus; viruses.