Infection-related symptoms during human bocavirus 1 and 2 primary seroconversions compared with those of the previous and subsequent sampling intervals.

Note: first HBoV1 seroconversion was regarded as primary regardless of the presence or absence of pre-existing HBoV2 or -3 IgG, and vice versa. SC, seroconversion; URTI, upper respiratory tract illness; HBoV1, human bocavirus 1; HBoV2, human bocavirus 2.Boldface and * indicate statistical significance by Liddell exact test (Infection-related symptoms during human bocavirus 1 and 2 primary seroconversions compared with those of the previous and subsequent sampling intervals.