ABO and infectious disease: This is in part true for infectious disease such as Plasmodium falciparum malaria, Helicobacter pylori, and Vibrio cholera, where ABO blood groups are involved in different aspects of pathogenesis, from microbe attachment and entry into cells to subsequent disease development and severity of disease (Stowell and Stowell, 2019a; Franchini and Bonfanti, 2015; Cserti and Dzik, 2007; Degarege et al., 2019).