June 12, 2026
3 min read
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Children with fall birthdays are more likely to get vaccinated against influenza and less likely to be diagnosed with flu compared with peers who have summer birthdays, according to findings published in JAMA Pediatrics. Christopher M. Worsham, MD, MPH, a health services researcher at Harvard Medical School, said the motivation for the study was the federal government removing influenza
Fall-born children receive flu vaccines 8-12 percentage points more frequently, with estimated efficacy of 9-14 prevented cases per 100 vaccinated. Quasi-experimental design proves efficacy without RCT, undermining the government's downgrade of universal pediatric flu vaccination recommendations.
June 12, 2026
3 min read
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