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COVID vaccines cut the risk of transmitting Delta — but not for long

Summary:
People who receive two COVID-19 jabs and later contract the Delta variant are less likely to infect their close contacts than are unvaccinated people with Delta.Vaccine mandates are unlikely to slow the spread of Delta by all that much, but researchers are looking into whether a third booster shot may be more effective at doing so.The study shows that people who become infected with the Delta variant are less likely to pass the virus to their close contacts if they have already had a COVID-19 vaccine than if they haven’t1. But that protective effect is relatively small, and dwindles alarmingly at three months after the receipt of the second shot.Nature COVID vaccines cut the risk of transmitting Delta — but not for long

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 People who receive two COVID-19 jabs and later contract the Delta variant are less likely to infect their close contacts than are unvaccinated people with Delta.


Vaccine mandates are unlikely to slow the spread of Delta by all that much, but researchers are looking into whether a third booster shot may be more effective at doing so.

The study shows that people who become infected with the Delta variant are less likely to pass the virus to their close contacts if they have already had a COVID-19 vaccine than if they haven’t1. But that protective effect is relatively small, and dwindles alarmingly at three months after the receipt of the second shot.

Nature 



Mike Norman
Mike Norman is an economist and veteran trader whose career has spanned over 30 years on Wall Street. He is a former member and trader on the CME, NYMEX, COMEX and NYFE and he managed money for one of the largest hedge funds and ran a prop trading desk for Credit Suisse.

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