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Σάββατο 10 Φεβρουαρίου 2018

Mass media effect on vaccines uptake during silent polio outbreak

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Publication date: Available online 10 February 2018
Source:Vaccine
Author(s): Iftach Sagy, Victor Novack, Michael Gdalevich, Dan Greenberg
BackgroundDuring 2013, isolation of a wild type 1 poliovirus from routine sewage sample in Israel, led to a national OPV campaign. During this period, there was a constant cover of the outbreak by the mass media.AimsTo investigate the association of media exposure and OPV and non-OPV vaccines uptake during the 2013 silent polio outbreak in Israel.MethodsWe received data on daily immunization rates during the outbreak period from the Ministry of Health (MoH). We conducted a multivariable time trend analysis to assess the association between daily media exposure and vaccines uptake. Analysis was stratified by ethnicity and socio-economic status (SES).ResultsDuring the MoH supplemental immunization activity, 138,799 OPV vaccines were given. There was a significant association between media exposure and OPV uptake, most prominent in a lag of 3–5 days from the exposure among Jews (R.R 1.79C.I 95% 1.32–2.41) and high SES subgroups (R.R 1.71C.I 95% 1.27–2.30). These subgroups also showed increased non-OPV uptake in a lag of 3–5 days from the media exposure, in all vaccines except for MMR. Lower SES and non-Jewish subgroups did not demonstrate the same association.ConclusionOur findings expand the understanding of public behaviour during outbreaks. The public response shows high variability within specific subgroups. These findings highlight the importance of tailored communication strategies for each subgroup.



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