An Epidemiological Investigation of Hart Park and Turlock Viruses in California.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
Pagination or Media Count:
Turlock TUR and Hart Park HP viruses were repeatedly isolated from the mosquito Culex tarsails in California. Both viruses were found to replicate in Cx. tarsalis following parenteral inoculation. Once infected, Cx. tarsalis could transmit HP virus to blood droplets. Low titers of HP stock viruses did not allow efficient evaluation of infection of Cx. tarasalis by ingestion of the virus. Laboratory studies failed to demonstrate transovarial transmission of either virus from paranterally infected females to their progency. One isolation of HP virus was made from a male Cx. tarsalis collected in Kern County but the frequency of isolation 18848 was much less than that from female Cx. tarsalis 11238,369. A combination of neutralization and indirect fluorescent antibody tests on sera collected in California from humans and a variety of domestic and feral animals showed that TUR virus infection was most prevalent in feral birds and horses and HP virus infection was prevalent in feral birds and domestic dogs.
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