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A 56-year-old male asked:

can someone vaccinated with covid-19 vaccine still be carrier of the virus and spread it around without showing any symptoms?

3 doctor answers4 doctors weighed in
Dr. John Berryman
Obstetrics and Gynecology 54 years experience
Covid-19 ?'s: If/when a true vaccine for Covid-19 is available, the "success" is not 100% effective, and it is hard to predict which individual will still be able to convey the virus. It is currently thought that upwards of 40-50% of those with the virus may be positive and asymptomatic or with minor symptoms.
Dr. Heidi Fowler
Psychiatry 25 years experience
COVID transmission: Agree with Dr. Berryman. That could theoretically occur if the vaccination was not successful.
Dr. Geoffrey Rutledge
Internal Medicine 41 years experience
Not from the vaccine: The COVID-19 vaccine does not have virus in it, and cannot make you a carrier. After vaccination, you won't get sick from COVID-19, and it is not likely that you would be able to spread the virus if you were exposed to it — but we do not yet know that with certainty. There remains the possibility that vaccinated individuals could unknowingly spread the virus for a period of time after exposure.

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Last updated Dec 21, 2020

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