The scientists studying the vaccine’s effectiveness need to understand more about the protection that COVID-19 vaccines provide in real-world conditions. This lack of knowledge means we should act like the answer is yes.
Individuals who get vaccinated might spread the virus if they contract COVID-19 and their immune system does not fight the virus completely, by coughing, sneezing and breathing.
Remember: No one can be sure yet if this actually happens or if it happens often enough that you’d be emitting enough active virus to infect someone else.
The reason there’s uncertainty around this question is because the emergency authorization of vaccines is based on the vaccine’s ability to prevent the vaccinated person from becoming severely sick with COVID-19 rather than on preventing that person from spreading the virus. While experts learn more about the protection that COVID-19 vaccines provide under real-life conditions, it will be important for everyone (including those who are vaccinated) to continue using all the tools available to help stop this pandemic.
To protect yourself and others, follow these recommendations:
Wear a mask over your nose and mouth Stay at least 6 feet away from others Avoid crowds Avoid poorly ventilated spaces Wash your hands often
Source: https://www.cdc.gov/coronavirus/2019-ncov/vaccines/faq.html