title: Absence of naturally acquired tetanus antitoxin in the free-ranging Cayo Santiago rhesus monkeys (Macaca mulatta).
abstract: Tetanus is enzootic in the free-ranging rhesus monkey colony on Cayo Santiago. The disease accounts for 25% of all mortalities in the population. The high prevalence of tetanus provided a unique opportunity to study the potential roles of geophagia, wounding, and clinical tetanus infections on the development of naturally acquired tetanus antitoxin in rhesus macaques. Eighty-six unvaccinated monkeys, including six that recovered from tetanus, were serosurveyed using a mouse toxin neutralization test. None of the animals had detectable antitoxin titers (less than 0.001 AU/ml), suggesting that natural immunity to tetanus is either rare or nonexistent in the Cayo Santiago colony.
mesh_terms: D000818:Animals; D006168:Guinea Pigs; D006801:Humans; D007113:Immunity, Innate; D008251:Macaca / Q000276:immunology*; D008253:Macaca mulatta / Q000276:immunology*; D013742:Tetanus / Q000276:immunology; D013743:Tetanus Antitoxin / Q000276:immunology*
chemical_list: D013743:Tetanus Antitoxin