People who don't get the flu shot are being protected by those who do. While those who received a vaccine saw the best protection 💉, the researchers say unvaccinated people had an indirect benefit if people around them were vaccinated 🛡️.
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#FluShot #VaccinationMatters #PublicHealth #HerdImmunity #ProtectEachOther
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#FluShot #VaccinationMatters #PublicHealth #HerdImmunity #ProtectEachOther
www.scimex.org
People who don't get the flu shot are being protected by those who do
People who don't get the flu shot are being protected by those who do
Members of a community that take the seasonal influenza vaccine are likely lowering overall flu transmission and reduc
Members of a community that take the seasonal influenza vaccine are likely lowering overall flu transmission and reduc
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COVID vaccination of children reduced COVID cases in the vaccinated children by 80% 🎉. This protection also spilled over to close contacts 👨👩👧👦, producing a household-level indirect effect about three-fourths as large as the direct effect.
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#COVIDVaccination #ChildrensHealth #HerdImmunity #VaccinesWork #PublicHealth
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#COVIDVaccination #ChildrensHealth #HerdImmunity #VaccinesWork #PublicHealth
www.aeaweb.org
Direct and Indirect Effects of Vaccines: Evidence from COVID-19
(January 2026) - We estimate direct and indirect vaccine effectiveness and assess how far the infection-reducing externality extends from the vaccinated, a key input to policy decisions. Our empirical strategy uses nearly universal microdata from a single…
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High uptake of school-based HPV vaccines 💉 could also protect unvaccinated women against the development of pre-cancerous cells 🔍 and cut their cancer risk 🚺, finds new Swedish population study (n=857,168). These “herd effects” support universal school/based vaccination initiatives 🌍.
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#HPVVaccination #PublicHealth #CancerPrevention #HerdImmunity #SchoolHealthInitiative
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#HPVVaccination #PublicHealth #CancerPrevention #HerdImmunity #SchoolHealthInitiative
The Lancet Public Health
Herd effect of human papillomavirus vaccination on incidence of high-grade cervical lesions: a population-based cohort study in…
HSIL+ incidence in unvaccinated women declined in the birth cohort eligible for HPV
vaccination through a school-based programme. This finding shows that the herd effect
can be achieved through high-coverage HPV vaccination.
vaccination through a school-based programme. This finding shows that the herd effect
can be achieved through high-coverage HPV vaccination.
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In 2025, the US surpassed its highest annual case count of measles in more than 30 years, mostly in unvaccinated children. An immunization rate of at least 95% is necessary for herd immunity to measles. Study identified 8 counties in California with census tracts with less than 95% coverage.
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#Measles #HerdImmunity #PublicHealth
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#Measles #HerdImmunity #PublicHealth
Jamanetwork
Geographic Variation in Measles Vaccine Coverage in School-Aged Children
This cohort study assesses the variation in measles-containing vaccine coverage at the county census tract level among children aged 7 years in Northern California.
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Vaccines not only directly protect vaccinated individuals but also contribute to protecting the entire population via indirect herd-immunity benefits. Half of averted COVID-19 infections and 1/4 of hospitalizations and deaths were attributable to indirect protection of unvaccinated by vaccinated.
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#HERDIMMUNITY #VaccinesWork #PublicHealth
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#HERDIMMUNITY #VaccinesWork #PublicHealth
The Royal Society
Quantifying the direct and indirect impact of COVID-19 vaccination: evidence from Victoria, Australia
Abstract. Vaccines not only directly protect vaccinated individuals but also contribute to protecting the entire population via indirect herd-immunity bene
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