Non-specific effects of BCG vaccination on morbidity among children in Greenland: a population-based cohort study
Author(s) -
Simon Haahr,
Sascha Wilk Michelsen,
Mikael Andersson,
Karen Bjørn-Mortensen,
Bolette Søborg,
Jan Wohlfahrt,
Mads Melbye,
Anders Koch
Publication year - 2016
Publication title -
international journal of epidemiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.406
H-Index - 208
eISSN - 1464-3685
pISSN - 0300-5771
DOI - 10.1093/ije/dyw244
Subject(s) - medicine , vaccination , poisson regression , tuberculosis , pediatrics , rate ratio , confidence interval , epidemiology , cohort study , cohort , retrospective cohort study , infectious disease (medical specialty) , bcg vaccine , incidence (geometry) , population , immunology , disease , environmental health , physics , pathology , optics
The potential non-specific effects of BCG (Bacillus Calmette-Guérin) vaccination, with reported reduction of infectious disease morbidity among vaccinated children, in addition to the protective effect against tuberculosis (TB), are highly debated. In Greenland, BCG vaccination was introduced in 1955, but temporarily discontinued from 1991 to 1996 due to nationwide policy changes. Using the transient vaccination stop, we aimed to investigate possible non-specific effects of BCG vaccination by measuring nation-wide hospitalization rates due to infectious diseases other than TB among vaccinated and unvaccinated children.
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