Were there long-term economic effects of exposure to Polio Vaccination?: an analysis of migrants to Sweden 1946-2003
Health, Econometrics and Data Group (HEDG) working papers 19/19
York, UK, University of York, Department of Economics (2019)
Recent research showed that exposure to the vaccine against polio in early life had no long-term economic beneﬁts among native Swedes. However, whether this result holds for individuals from other countries remains unexplored. This study explores the relationship between exposure to the vaccine and later-life outcomes, but focuses on individuals who migrated to Sweden (birth cohorts 1946-1971), who constitute a diverse sample in terms of national origin. Using a diﬀerences-in-diﬀerences approach and register data from the Swedish Longitudinal Immigrant Database, this study explores if being exposed to the vaccine against polio in the year of birth in the country of origin has any impact on adult income, educational achievement, nor days or number of hospitalizations. The results are in line with the previous research in showing that there are no statistically signiﬁcant eﬀects on adult income, education, or health from exposure to the vaccine against polio, regardless of national origin. Furthermore, no scarring eﬀects of exposure to polio epidemics were found on any of the outcomes, reinforcing the hypothesis that polio did not scar individuals in the same way as other contemporary epidemic diseases did, and that the lack of scarring could explain the absence of long-term impact from vaccine exposure.
Keywords: Sweden, early childhood, education, income, migration, poliomyelitis, vaccination