Experience of hepatitis A vaccination during an outbreak in a nursery school of Tuscany, Italy
Epidemiology and Infection·
- DOI
- 10.1017/s0950268898001411
- PMID
- 9825788
- PMCID
- —
- OpenAlex
- W2088491153
- Study type
- Journal article
- Publisher
- Cambridge University Press (CUP)
- Article type
- journal-article
- Integrity
- current
Why this research matters now
The findings suggest hepatitis A vaccination without immunoglobulin may be a viable outbreak control measure in institutional settings. The study also indicates increasing susceptibility to hepatitis A virus in central Italy over recent decades.
Structured evidence summary
Research question
The study evaluated the effectiveness of a hepatitis A vaccination program implemented during a nursery school outbreak in Tuscany, Italy, without the use of immunoglobulin.
Study design
The authors describe an outbreak investigation that included a vaccination intervention beginning in December 1996, approximately six weeks after outbreak onset.
Population and setting
The vaccination program included 33 children attending a nursery school in Tuscany, Italy, along with 21 household contacts and 6 school staff members. The outbreak began in late October 1996.
Main findings
Eleven cases occurred among children at the school (27% attack rate) and 10 among household contacts including parents and grandmothers (9% attack rate). No additional cases were reported in the area after February 7, 1997. The authors suggest the vaccine likely contributed to early outbreak termination, as hepatitis A outbreaks typically persist longer without immune prophylaxis.
Public-health relevance
The findings suggest hepatitis A vaccination without immunoglobulin may be a viable outbreak control measure in institutional settings. The study also indicates increasing susceptibility to hepatitis A virus in central Italy over recent decades.
Important limitations
This summary relies on the supplied single-article abstract and metadata. The abstract does not specify the study design's analytical rigor, control groups, temporal relationship between vaccination and outbreak decline, or potential confounding factors. Access to the full paper is required for decision-grade interpretation.
GIDS interpretation
The classifier links associate this article with hepatitis A, outbreak investigation, and vaccination topics in Italy. These links support discoverability for users monitoring vaccine-preventable disease outbreaks or hepatitis A epidemiology in European settings.
Related GIDS surveillance
Literature context does not validate, explain, or change a surveillance signal. Exact and contextual relationships are shown separately.
Evidence relationships
This article has 14 auditable classifier relationships to diseases, places, topics, and study design.