“The Israeli cohort study assessed any positive (COVID-19) test result,” CDC researchers said, comparing the study to the multistate hospitalization review mentioned in the
Morbidity and Mortality Weekly Report. “
The Israeli cohort study also only examined vaccinations that had occurred 6 months earlier, so the benefit of more recent vaccination was not examined.”
Both Neilsen and Rankin agree that the type of study used in the Israeli example — an observational study that was not peer reviewed — is also an issue due to the potential for bias and other confounding variables that are built into observational studies.
“Medical science follows peer-reviewed, published articles, stuff that’s reproducible too,” Rankin said. “Observational trials, you’re not able to do that. You try to take out all the variables and reduce influence bias. With observational trials, it’s already built in.”
Should you get a vaccine if you've already had COVID? The CDC says the latest research shows you should.
www.clickorlando.com