How the flu vaccine may help prevent COVID-19 infection

Dr. Jen Ashton reports on a study that shows people with the flu vaccine are less likely to get COVID-19.
2:11 | 10/28/20

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Transcript for How the flu vaccine may help prevent COVID-19 infection
and Johns Hopkins university tracking the latest on the coronavirus. Diagnose cases crossed the 44 million mark and the death toll here at home now rising above 226,000. And Jen, so with cases rising, we're still awaiting news and word on a vaccine, there's some interesting preliminary data showing that there could be a benefit from getting the flu shot with covid-19? Exactly, and keyword to eze, Amy is, preliminary data that suggests, here's what we know at this point, this is not yet peer reviewed. This is a new study. Some major caveats. But data does suggest that the flu vaccine may trigger this general immune response in the people who get it, making them less likely to become infected with covid-19. One hospital study showed that people who were vaccinated against the flu, 39% less likely to subsequently become infected with covid-19. As we say all the time, this is critically important, association does not prove causation, cause and effect. There's a theory, trained innate immunity, vaccine to one pathogen, in the initial reaction in the body, potentially giving some benefit against other pathogens. So, do we know more about why this is happening? Is this a good reason to run out and get a flu shot? Well, first answer to your question, T.J., the theories may have been something to do with beoror of people who are more likely to be vaccinated against the flu, they may be, you know, taking extra precautionary steps against getting infected with other respiratory pathogens. Again, this theory of innate immunity where the first round of immune response kind of generally revs up your body's immune system against any other type of infection. But bottom line, this needs more research, however it is a good reminder -- go get your flu vaccine I signed up for mine today. Good girl. I'm proud of you. November 10th or 11th. Perfect. You? Let me write that down. We can do it here? Oh, goodness. All right, no exc We turn now to ABC's Kyra Phillips in D.C. With the latest

This transcript has been automatically generated and may not be 100% accurate.

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