Oväntat hög andel förskolebarn immuna mot hepatit A-virus. Smittspårningsutredning visar på behovet av vaccination inför utlandsresor
Engelsk titel: Unexpectedly high proportion of preschool children immune to hepatitis A virus. Contact tracing investigation shows the need for vaccination prior to traveling abroad
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Författare:
Persson, Hanna
;
Nasta, Federico
;
Svensson, Ingrid
;
Widerström, Micael
Email: micael.widerstrom@jll.se
Språk: Swe
Antal referenser: 19
Dokumenttyp:
Artikel
UI-nummer: 15017671
Sammanfattning
Hepatitis A (HAV) is a low incidence infectious disease in Sweden, and a majority of cases in this country are acquired abroad, although domestic cases are not uncommon in the day care setting. We
investigated an outbreak of hepatitis A in two day care centres and found that a large proportion (23%) of the 113 unvaccinated preschool children were immune to HAV. This observation indicates that there may have
been sub-clinical cases of HAV at the two centres. The results of our study underscore the importance of HAV vaccination in preschool children prior to travel to areas where this disease is common. The findings
also highlight the need for up-to-date national seroepidemiological data on HAV immunity in different age groups in Sweden. Studies aimed at obtaining such information could also provide a basis for deciding
whether targeted vaccination strategies against HAV are needed in the day care setting.