Immunity acquired from prior Covid virus infection not enoug

Unvaccinated adults who were previously infected with Covid-19 were found to be more than twice as likely at risk of reinfection as those who were previously infected but vaccinated.

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Kentucky , United States , Alyson Cavanaugh , Us Centers For Disease , Disease Control , Mortality Weekly Report , , கெந்‌டகீ , ஒன்றுபட்டது மாநிலங்களில் , அலிசன் கவனக்குக்ஹ் , எங்களுக்கு மையங்கள் க்கு நோய் , நோய் கட்டுப்பாடு , இறப்பு வாராந்திர அறிக்கை ,