Complex sentence: Arthralgias and arthritis are commonly reported in association with parvovirus B19 infection in adults whereas erythema infectiosum is the main symptom observed in children.the occurrence of arthralgia coincides with the initial detection of circulating IgM-and IgG-antibodies against the viral structural proteins VP1 and VP2.
Split into simpler sentences: Arthralgias and arthritis are commonly reported in association with parvovirus B19 infection in adults whereas erythema infectiosum is the main symptom observed in children. The occurrence of arthralgia coincides with the initial detection of circulating IgM-and IgG-antibodies against the viral structural proteins VP1 and VP2.