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serologic survey for borrelia burgdorferi antibody in horses referred to a mid-atlantic veterinary teaching hospital.blood samples obtained from 13 of 100 (13%) and 6 of 91 (7%) horses at the george d. widener hospital for large animals in the months of june and october, respectively, had antibody to borrelia burgdorferi as determined by elisa. horses from the states of new york, maryland, delaware, new jersey, and pennsylvania were seropositive for b burgdorferi. the frequency of antibody response in horses from new jersey was greater (p less than 0.05) than the frequency of antibody response in horses from p ...19902332371
parahost behavior of adult gasterophilus intestinalis (diptera: gasterophilidae) in delaware.parahost behavior of adult gasterophilus intestinalis (degeer) was observed during the summers of 1978 and 1979 near pastured horses on two farms near newark, del. adult fly occurrence, although sparse in early summer, indicated a gradual increase, with three surges in emergence. in the laboratory, males lived 1-3 d and females 1-2 d. in the field, marked flies were not seen on days following their release. adult behavior indicated an urgency in mating and oviposition dictated by a short life sp ...19912033621
ecological evidence against vertical transmission of eastern equine encephalitis virus by mosquitoes (diptera: culicidae) on the delmarva peninsula, usa. 19872881000
eastern equine encephalitis in quebec and connecticut, 1972: introduction by infected mosquitoes on the wind?in 1972 there were outbreaks of eastern equine encephalitis in the eastern townships, quebec, canada and in connecticut, usa. climatic data including northern hemisphere synoptic charts were examined. the findings indicate that the virus could have been brought to lac brome by infected mosquitoes carried on surface winds from meriden, connecticut, on the night of august 22-23, 1972. the distance of 400 km would have been covered in 14-16 h at a speed of 25-30 km h-1 and at a temperature of 15 de ...19892563337
update: west nile virus activity--eastern united states, 2000.data reported to cdc through the west nile virus (wnv) surveillance system have shown an increase in the geographic range of wnv activity in 2000 compared with 1999, the first year that wnv was reported in the western hemisphere. in response to this occurrence of wnv, 17 states along the atlantic and gulf coasts, new york city, and the district of columbia conducted wnv surveillance, which included monitoring mosquitoes, sentinel chicken flocks, wild birds, and potentially susceptible mammals (e ...200011105767
characteristics of a normal equine population of delaware and chester counties, pennsylvania, 1968-1969. 19725022407
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