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Related Experiment Video

Updated: Mar 17, 2026

Intranasal Administration of Recombinant Influenza Vaccines in Chimeric Mouse Models to Study Mucosal Immunity
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Stimulating Influenza Vaccination via Prosocial Motives.

Meng Li1, Eric G Taylor2, Katherine E Atkins2,3

  • 1Department of Health and Behavioral Sciences, University of Colorado Denver, Denver, Colorado, United States of America.

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|July 27, 2016
PubMed
Summary
This summary is machine-generated.

Vaccinating against influenza (flu) can be motivated by a desire to protect others. Experimental messages highlighting flu victims increased vaccination intentions, especially among past non-vaccinators, by boosting prosociality.

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Area of Science:

  • Public Health
  • Behavioral Science
  • Vaccinology

Background:

  • Low influenza vaccination rates in the US pose significant health and economic burdens.
  • Younger populations drive flu transmission but experience milder illness, necessitating prosocial motivation for herd immunity.
  • The causal link between prosociality and flu vaccination decisions remains under-established.

Purpose of the Study:

  • To experimentally investigate the causal role of prosocial motivation in influenza vaccination decisions.
  • To determine if messages highlighting flu victims can increase vaccination intentions.

Main Methods:

  • An experimental study involving 3952 participants across eight countries.
  • Participants were exposed to messages describing potential flu victims (elderly, young, or unidentified) or a control message.
  • Measurements included sympathy, general prosociality, and influenza vaccination intentions.

Main Results:

  • All three experimental messages significantly increased influenza vaccination intentions compared to the control.
  • The effect of the messages on vaccination intentions was mediated by increased prosocial motives.
  • Messages were more impactful for individuals with a history of non-vaccination; identifiable victims elicited greater sympathy and prosociality.

Conclusions:

  • Direct experimental evidence confirms that prosocial motives causally influence influenza vaccination decisions.
  • Appeals to altruism and benefiting others can effectively prompt individuals to vaccinate against the flu.