Fig. 10From: A systematic review of influenza A virus prevalence and transmission dynamics in backyard swine populations globallyThe global status of backyard swine farming along with transmission dynamics of IAV. a Several studies reported the presence of various animal species in swine backyard farms. b The number of studies that reported the interactions between backyard swine and other animal species in the backyards. c The number of studies that reported IAV interspecies transmission in the backyards. d The number of studies that investigated symptomatic and clinically healthy backyard swine. e Many molecular studies identified and characterized various IAV subtypes in backyard swine swabs and tissue samples. f The number of serological studies that identified and characterized different IAV subtypes in backyard swine sera samples.Back to article page