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Covid-19 booster vaccines should leave out original spike protein
The first covid-19 vaccines were based on the spike protein from the original virus, but including this in boosters may be hindering immunity to newer variants
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The first covid-19 vaccines were based on the spike protein from the original virus, but including this in boosters may be hindering immunity to newer variants
A vaccine for strep A may not be very profitable for pharmaceutical companies and there are technical challenges that make such vaccines difficult to develop, but early-stage clinical trials are underway