Vaccines will soon be more invasive than ever, altering your very DNA.
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ZyCoV-D prevents symptomatic disease in 66% of those vaccinated against Covid-19, the vaccine maker says. It takes 3 doses, but can be made and stored cheaply, very important for places like India.
The obstacle to such shots so far has been the human body's rejection of DNA-altering foreign bodies, something that does not happen as often in animal tests (perhaps human cells have been honed to be more rejecting due to our large population and exposure to viruses from every corner of the wolrd).
There are 160 DNA vaccines being tested in the U.S. mostly to treat cancer or HIV. Would you take a vaccine (should it be called something else?) to cure your possibly fatal cancer or HIV? It may soon be an option, perhaps a requirement if it's once-and-done vs. years of expensive therapy with uncertain results.