“…The U.S. Environmental Protection Agency (EPA) has recently issued a draft systematic review of antibodies other than to COVID-19 for consideration by its Scientific Advisory Board and preliminarily concluded that there was an inverse association for PFOA and PFOS in children ( US EPA, 2022 ). Some of the data on antibody concentrations after vaccination in relation to PFAS in adults have provided support for an inverse association ( Kielsen et al, 2016 , Looker et al, 2014 , Pilkerton et al, 2018 , Shih et al, 2021 ; Stein, Ge, et al, 2016; Stein, McGovern, et al, 2016); however, limited data exist on any given vaccine type. Large differences in Coronavirus antibody concentrations affect risk of Coronavirus disease ( Barrow et al, 1990 , Bradburne et al, 1967 , Callow, 1985 ).…”