Our finding is similar to Feng’s observation of RV‐IgM prevalence in 2009.8 Although the advent of vaccine has decreased the incidence of RV infection and CRS dramatically,20 women are advised not to become RV‐vaccinated during pregnancy.21 The limitation of this study is that the data were collected from a 12‐month period; cumulative observation for years might provide a better understanding about the seasonal influence on TORCH infections.22 This evidence concerns the gene CD40LG and congenital rubella syndrome.