| [outbreaks of hepatitis a in the city of havana in the year 1991]. | fifty-six outbreaks of hepatitis a infection were studied in city of havana between january and september, 1991. in 34 of these, the presence of the hepatitis a virus (hav) was confirmed, either by the detection of specific serum igm antibodies to the hav or by the detection of the antigen in the feces of the subjects under study. diagnosis was not made in some of the outbreaks due to the insufficient number of samples sent to the laboratory. of the 453 blood serum samples under study, 126 were ... | 1994 | 9768233 |
| prevalence of antibodies to hepatitis e virus in residents of a district in havana, cuba. | a seroepidemiological study of hepatitis e virus (hev) infection was conducted in a district of havana, where hepatitis a virus (hav) is considered endemic. the levels of anti-hev antibodies were evaluated by enzyme-linked immunosorbent assay (elisa) based on the recombinant protein gst-orf2.1. anti-hev antibodies were detected in 11 of 209 (5.3%) of serum samples, compared to 71.3% for anti-hav antibodies. no risk factors reported previously for hev infection showed a significant association wi ... | 2005 | 15779049 |