| impact of hepatitis a in siena: a "traveller's disease"? | over a period of seven years (from 1980 to 1987) 58 acute viral hepatitis a cases were admitted to the departments for infectious diseases. this number represents 10.76% of all viral hepatitis patients. most of the patients had travelled to foreign countries or to areas in italy with high hepatitis a virus (hav) circulation. an assessment of specific immunization against hav in normal healthy people aged 1-60, performed by elisa, showed a very low number of sero-positive subjects. the disappeara ... | 1990 | 2344870 |
| 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 |
| [epidemiologico-clinical considerations on a case file of acute hepatitis observed 1980-1983]. | between january 1980 and december 1983, 332 consecutive cases of acute hepatitis were observed in adult patients admitted to the department of infectious disease and gastroenterology of siena. sex and age of the patients, the presence of jaundice, the maximum value of the serum-glutamate-pyruvate-transaminase (sgpt) were considered. serum specimens were tested for hepatitis b surface antigen (hbsag), antibody against hepatitis b core antigen (anti-hbc) of the igm class, antibody against hepatiti ... | 1985 | 3938288 |
| experience of hepatitis a vaccination during an outbreak in a nursery school of tuscany, italy. | an outbreak of hepatitis a started in late october 1996 in a nursery school in tuscany, italy. a programme of hepatitis a vaccination without the use of immunoglobulin started at the beginning of december 1996 and included 33 children, 21 household contacts and 6 adults working in the school. overall, 11 cases occurred in children attending the school (attack rate 27%) and 10 among their household contacts (attack rate 9 %). the latter also included parents, and, in two cases, grandmothers. the ... | 1998 | 9825788 |
| prevalence of hepatitis a virus infection in sewage plant workers of central italy: is indication for vaccination justified? | prevalence of antibodies to hepatitis a virus (hav) was studied in a group of 65 sewage plant workers living in tuscany, central italy. in order to evaluate the effect of several confounders (age, place of birth, income, educational degree, sea-food consumption, etc.), subjects under study were matched with 160 other workers residing in the same area. anti-hav was detected in about 51% of sewage workers and 44% of other employees. the difference was not statistically significant. both univariate ... | 2000 | 11115708 |
| hepatitis a seroprevalence in tuscany, italy. | information regarding the current seroprevalence of hepatitis a virus (hav) is useful for the control of hav infections. the objective of our study was to evaluate the prevalence of anti-hav antibodies among children (1-5 years old) and young adults (15-20 years old) in tuscany, in central italy. a total of 565 sera were collected in three years 1992, 1998 and 2004, equally distributed between the two age groups. the overal proportion of those that tested positive for anti-hav antibodies was 8.3 ... | 2009 | 19317984 |
| a unique hav strain circulated in patients with acute hav infection with different risk exposures in tuscany, italy. | acute hepatitis a virus (hav) is reported to be an emergent problem in several developed countries. | 2010 | 21094625 |