Figure 1.
Distribution of the seroresponses for MCPyV by age and gender.
Presented are seroresponses of 5548 healthy adults aged 25–65 years who were enrolled from rural Anyang, China, 2007–2009. The strength of the antibody reactions was plotted against the percentile according to age and gender. Color codes for age groups in years and the chosen cut-off of 1000 MFI are as indicated. The figure can be interpreted as follows (upper left panel, MCPyV antibodies among all subjects): For individuals aged 25–30 years, about 50% showed antibody reactions above 1000 MFI (that is, the seroprevalence of MCPyV is 50% using the cut-off of 1000 MFI) and about 30% above 10000 MFI (that is, the seroprevalence of MCPyV is 30% using the cut-off of 10000 MFI). NOTE. MCPyV: Merkel cell polyomavirus; MFI: mean fluorescence intensity.
Table 1.
Antibody positivity to MCPyV by age and gender in rural Anyang, China, 2007–2009.
Table 2.
High levels of MCPyV in seropositive subjects according to age and gender in rural Anyang, China, 2007–2009.
Table 3.
Univariate and multivariate logistic analyses of risk factors for MCPyV seropositivity in rural Anyang, China, 2007–2009.
Table 4.
Spousal association of MCPyV seropositivity among 1587 heterosexual couples in rural Anyang, China, 2007–2009.