>>11323708Lmao butthurt
>>11323713>The mortality rate is 0.5 per cent in infants under 6months.>Among 1,185,927 infants born between July 2005 and September 2010, 1032 pertussis cases were identified.(this study also notes that its recorded incidence rate is the highest the authors have seen, and it records events from birth up to 12 months of age).
So a 0.087% probability of contracting it, and if you do get it and are 6 months (older = lower) you die only 0.5% of the time. Another study says the global mortality rate is even lower, at 0.02% among children aged less than 12 months.
What about vaccine efficacy?
>Between Dec. 7, 2009, and Mar. 31, 2013, data on 5867 individuals (486 test-positive cases and 5381 test-negative controls) were available for analysis. Adjusted vaccine effectiveness was 80% (95% confidence interval [CI] 71% to 86%) at 15–364 days, 84% (95% CI 77% to 89%) at 1–3 years, 62% (95% CI 42% to 75%) at 4–7 years and 41% (95% CI 0% to 66%) at 8 or more years since last vaccination.So all in all it does literally nothing, statistically speaking.
It appears that pertussis is mutating so these efficacy numbers are much higher than new numbers. In a recent outbreak in florida, investigators found the vaccine was only 45% effective.
Moreover, efficacy numbers are only for those who get all doses and it's believed to be significantly less for underdosed (i.e. younger, like less than 6 months old infants, i.e. the only ones at any real risk).
A metareview also says:
>severe adverse events of dTap vaccination>The incidence of severe adverse events for dTap at 1-month and 6-month post-vaccination were 0.7% and 4.2%, respectivelyOther studies say
>Sixty children experienced severe reactions >Incidence rates of HHE vary widely, from 3.5 to 291 per 100,000 injectionsThe 3.5 to 291 is supposed to be added to get a total extreme effect rate. Still, higher than 0.29%. That's very high when nobody gets whooping cough and everyone gets vaccinated.
