Ecologic studies of Venezuelan encephalitis virus in southeastern México. V. Infection of domestic animals other than equines
Scherer, W.F.; Dickerman, R.W.; Campillo-Sainz, C.; Zarate, M.L.; Gonzales, E.
American Journal of Tropical Medicine and Hygiene 20(6): 989-993
1971
ISSN/ISBN: 0002-9637 PMID: 5167188 Document Number: 34395
In southeastern Mexico, serum samples from cattle and pigs (but not chickens) were frequently positive for VE virus in hemagglutination-inhibition and neutralization tests. Cattle and swine may be involved in cycling virus between vector mosquitoes and vertebrates that amplify it. The geographical distribution of positive cattle and pig sera on the Gulf coast conformed with that of VE virus from other studies, and the low prevalence of antibodies in the arid, irrigated region on the Pacific side of the Isthmus of Tehuantepec corresponded with the inability of other studies to detect much virus activity there. Demonstration of antibody in serum from swine on the Pacific coast in Chiapas suggested that VE virus was also active there.