| seroepidemiological research on hepatitis a (ha) in the city of siena. | the circulation of hepatitis a virus in the city of siena and the tight neighbouring area appears to be fairly rare. in fact, the number of cases suffering from hepatitis a, admitted into the clinic of infectious diseases of the university of siena, has been 33 out of 4,905 patients (yrs 1975-1985). of these, only 6 were patients resident in siena. seroepidemiological research, carried out with the elisa method on 275 people of an age between 1 and 20 years, has confirmed a specifically low immu ... | 1987 | 2839209 |
| intrafamilial hepatitis a outbreak: projection on the community in an area of tuscany. | in 1988, 3 intrafamilial cases of hepatitis a occurred in a little town in the nearby of siena: shellfishes were probably responsible for the index case, close contacts for the two secondary cases, characterized by a very long incubation period (above 60 days). an inapparent infection was detected in one household contact. no other cases of hepatitis a have been observed in that area since the intrafamilial outbreak until now. a seroepidemiological survey was carried out in a group of persons li ... | 1991 | 1670046 |