New Research On Flu Vaccines Sheds Light On Covid-19 Vaccines

One of the reasons we get flu shots annually is because new strains of influenza emerge and circulate year in and year out. But another reason, a new study shows, is that vaccine-induced antibodies against influenza tend to fade relatively quickly, most within a year or less.

For many of us, this likely comes as a surprise. If we’re vaccinated against a particular strain of influenza, we’d expect any protective immunity we gain to at least ward off the same strain the following year. Evidently, this isn’t the case—a discovery that gains all the more significance now that fast-fading immunity appears to be a defining, though still perplexing, feature of Covid-19.

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Originally published on Forbes (October 30, 2020)

© William A. Haseltine, PhD. All Rights Reserved.