Lower Risk for Dementia Following Adult Tetanus, Diphtheria, and Pertussis (Tdap) Vaccination.

The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
Jeffrey F ScherrerDaniel F Hoft

Abstract

Adult vaccinations may reduce risk for dementia. However, it has not been established whether tetanus, diphtheria, pertussis (Tdap) vaccination is associated with incident dementia. Hypotheses were tested in a Veterans Health Affairs (VHA) cohort and replicated in a MarketScan medical claims cohort. Patients were at least 65 years of age and free of dementia for 2 years prior to index date. Patients either had or did not have a Tdap vaccination by the start of either of the 2 index periods (2011 or 2012). Follow-up continued through 2018. Controls had no Tdap vaccination for the duration of follow-up. Confounding was controlled using entropy balancing. Competing risk (VHA) and Cox proportional hazard (MarketScan) models estimated the association between Tdap vaccination and incident dementia in all patients and age subgroups (65-69, 70-74, and ≥75 years). VHA patients were, on average, 75.6 (SD ± 7.5) years of age, 4% female, and 91.2% were White. MarketScan patients were 69.8 (SD ± 5.6) years of age, on average and 65.4% were female. After controlling for confounding, patients with, compared to without, Tdap vaccination had a significantly lower risk for dementia in both cohorts (VHA: hazard ratio [HR] = 0.58; 95% confidence i...Continue Reading

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Jun 20, 2020·Healthcare : the Journal of Delivery Science and Innovation·Barbara N HardingSascha Dublin

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Citations

Jul 11, 2021·The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences·Charles L GreenblattOfer N Gofrit
Aug 24, 2021·Vaccine·Timothy L WiemkenJeffrey F Scherrer

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