Investigations on the presence of antibodies to several flaviviruses in humans and some domestic animals in a biotope with a high frequency of migratory birds.

Data are reported on the presence of HAI antibodies to several flaviviruses (tick-borne encephalitis, West Nile, and Ntaya viruses) in humans and some domestic animals in a biotope with a high frequency of migratory birds. The results obtained prove the presence in humans of specific antibodies in a proportion of 11.8% to tick-borne encephalitis and of 25.5% to West Nile and Ntaya antigens. Among domestic animals it was only possible to detect antibodies to West Nile (4.9% in sheep, 4.1% in cattle, and 12% in goats) and to Ntaya antigens (1.9% in sheep, 1.6% in cattle, 8% in goats, and 13.9% in swine).