New Study Highlights the Power of Local Reporting in Vaccine Decisions

by Colleen Fleiss on  May 25, 2019 at 8:21 PM Drug News
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In areas when people have access to local information about disease prevalence, vaccination programs were found to be more successful in containing disease, suggested computational modeling of social networks.
New Study Highlights the Power of Local Reporting in Vaccine Decisions
New Study Highlights the Power of Local Reporting in Vaccine Decisions

Anupama Sharma of The Institute of Mathematical Sciences in Chennai, India, and colleagues present these findings in PLOS Computational Biology.

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During an epidemic, a person who previously avoided vaccination may perceive higher risk of infection and choose to get vaccinated. Such decision-making is influenced by the person's access to information about disease prevalence at the local or global level.

To explore how disease prevalence information influences the success of a vaccination program, Sharma and colleagues employed a computational modeling approach. Using principles of game theory, they probed the relative importance of information about disease prevalence in an individual's local neighborhood versus disease prevalence in the entire population.

The analysis shows that when individuals rely on global disease prevalence information, for instance obtained from mass media, vaccination is unable to prevent a large section of the population from becoming infected. In contrast, when individuals make vaccination decisions that are appropriate to their immediate circumstances, the final size of an epidemic outbreak may be smaller.

"While mass immunization programs are a crucial bulwark against pandemic outbreaks, it is essential to ensure that incidence information is disseminated strategically," Sharma says. "Our findings argue strongly for a transparent system of disseminating detailed incidence data, whereby individuals have real-time access to local information and do not rely only on mass media coverage."

Future research could take into account further complexities, such as dynamic social networks that change over the course of an epidemic or individual's varying perceptions of severity between diseases like Ebola and influenza. The authors also suggest that their computational framework could be extended to explore the influence of opinions about vaccination shared over online social networks that are very different from the networks over which a disease spreads.

Source: Eurekalert

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