| [epidemiological surveillance of influenza in western sicily in 1976-1977]. | two strains of influenza virus a/h3n2 antigenically similar to a/victoria/3/75 have been isolated in palermo in february 1977; a peak of extramortality has been observed in the same month, and a rise of hai antibodies for a/h3n2 viruses in human serum samples, taken from apparently healthy subjects living palermo, has been demonstrated between october 1976 and february 1977. similar rise of antibody titers has also taken place in serum samples from two communities in western sicily (favara, 30,0 ... | 1978 | 737044 |