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Serosurvey of Encephalomyocarditis Virus Neutralizing Antibodies in Southern Louisiana and Peruvian Indian Populations^*

Andries H. Jonkers

Sera of 947 members of 169 southern Louisiana households and of 995 Peruvian Indians from the Andean highlands were examined for the presence of encephalomyocarditis (EMC) virus neutralizing antibodies. Of the sera from Louisiana 3.5% showed antibodies; of those from Peru, 9.6%. In both populations it was found that boys and girls had equal prevalence rates but that adult females had higher rates than did adult males. The data suggest an association between very poor hygienic household conditions and probability of infection. No familial pattern in the occurrence of antibodies was found. The possibility that man becomes infected by the contamination of skin wounds with infective rodent excreta was mentioned.

^* Aided by a research grant (E-1906) from the National Institutes of Health, U. S. Public Health Service. The work reported was performed during the author's tenure of an Epidemiology Traineeship supported by National Institutes of Health training grant 2G-4.

Present address: Trinidad Regional Virus Laboratory, P. O. Box 164, Port-of-Spain, Trinidad.