Direct and crowding-out effects of a Hepatitis B vaccination campaign

Clémentine Garrouste, Arthur Juet and Anne-Laure Samson
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Clémentine Garrouste: LEM - Lille économie management - UMR 9221 - UA - Université d'Artois - UCL - Université catholique de Lille - Université de Lille - CNRS - Centre National de la Recherche Scientifique
Arthur Juet: Université Paris Dauphine-PSL - PSL - Université Paris Sciences et Lettres, LEDA-LEGOS - Laboratoire d’Economie et de Gestion des Organisations de Santé - LEDa - Laboratoire d'Economie de Dauphine - IRD - Institut de Recherche pour le Développement - Université Paris Dauphine-PSL - PSL - Université Paris Sciences et Lettres - CNRS - Centre National de la Recherche Scientifique

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Abstract: We evaluate the direct and spillover causal effects of a Hepatitis B (HB) vaccination campaign in French schools on the vaccination adherence of the targeted pupils. Using a regression discontinuity design, we show that this campaign created an exogenous shock on vaccination behavior, increasing the HB vaccination rate for children aged 11 and above. At the same time, we show a drop in the measles, mumps, and rubella (MMR) vaccination rate of the targeted pupils and an increase in the parental belief that measles is a benign disease. We interpret these results as a salience effect: the focus on HB vaccination leads to a decrease in the belief that other vaccines are as important. The effect on MMR vaccination was relatively unexpected and may imply a negative externality. Measles is an extremely contagious disease. If the vaccination rate falls, the disease will spread further, raising the question of the net effect of the HB vaccination campaign on the well-being of the population.

Date: 2023-12
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Published in Economics and Human Biology, 2023, 51, pp.101279. ⟨10.1016/j.ehb.2023.101279⟩

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Journal Article: Direct and crowding-out effects of a Hepatitis B vaccination campaign (2023)
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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:hal-04272396

DOI: 10.1016/j.ehb.2023.101279

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