Can You Spread Coronavirus After You Receive the Vaccine?

The COVID-19 vaccines in use now have been touted for how well they work—the Pfizer vaccine trials found its product to be 95 percent effective in preventing COVID-19 infections after both shots and the Moderna 94.1 percent effective after the same. And people are gradually becoming familiar and comfortable with how the mRNA technology that allowed these to be developed so quickly works. Scientists now have answers to many early questions about the vaccines.

But a question that there’s still no solid answer to is whether people who’ve been vaccinated can still carry the virus and potentially spread it to others.

The question arose as early as December, when Pfizer CEO Albert Bourla appeared on Dateline NBC”Thursday night, alongside the CEOs of Moderna and Johnson & Johnson. “I think this is something that needs to be examined,” Bourla told Dateline. “We are not certain about that right now.”

Data from studies that could give a better answer to that aren’t in yet. “There is a theoretical risk that you could pass the virus on to others despite being vaccinated,” says Kirsten Hokeness, Ph.D., director of Bryant University’s new Center for Health and Behavioral Sciences.

Meanwhile, health experts are encouraging people who are vaccinated to act as if they could somehow pass virus they had acquired somewhere to other people—that means they need to keep masking and social distancing (and you do, too).

While vaccines are a vital tool in combating the pandemic, having them doesn’t mean everyone can safely return to “normal” right away. Or forever—it’s not clear exactly how long post-vaccination immunity would last. That means keep doing what you’re doing, even after you receive the vaccine, until more research comes out.

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Source: Menshealth