Lee H, et al. - In Japan, as a rubella epidemic has been ongoing since August 2018, researchers sought to determine the likely size of a congenital rubella syndrome (CRS) epidemic during 2018–2019 using an integral equation based on age-specific incidence of rubella among adult women, the time delay from gestational age of infection to diagnosis of CRS, and distribution of the mothers’ age at delivery. As per outcomes, the occurrence of CRS is expected at an average of 24 weeks following the mother’s infection with the rubella virus. As of week 5 in 2019, expected CRS cases (2018–2019) have already exceeded 13 cases.