Sanjay Mishra | The Conversation

If you’ve been fully vaccinated against COVID-19, maybe you figured you no longer need to worry about contracting the coronavirus. But along with the rising number of new COVID-19 cases globally and growing concern about highly transmissible strains like the delta variant come reports of fully vaccinated people testing positive for COVID-19.

Members of the New York Yankees, U.S. Olympic gymnast Kara Eaker and U.K. health secretary Sajid Javid are some of those diagnosed with what is called a “breakthrough infection.”

As scary as the term may sound, the bottom line is that the existing COVID-19 vaccines are still very good at preventing symptomatic infections, and breakthrough infections happen very rarely. But just how common and how dangerous are they? Here’s a guide to what you need to know.

Robert King reports for Fierce Healthcare:

Fully vaccinated people who live in areas with substantial COVID-19 transmission should wear masks indoors, as new data shows fully vaccinated people can spread the Delta variant of the virus.

The Centers for Disease Control and Prevention updated its mask guidance on Tuesday to reflect the new data and increasing spread of the more transmissible Delta variant of COVID-19.

As the United States deals with a rise in Covid cases almost entirely among the unvaccinated, infectious disease expert Dr. Luis Medina-Garcia says for those who have not had the vaccine, it's not a matter of if but when they will contract the virus. Meanwhile, according to United States Surgeon General Dr. Vivek Murthy, those who have been vaccinated are more like to transmit the disease upon infection.