By Jeroslyn JoVonn The NB.1.8.1 COVID variant, now in the U.S., accounts for 10% of global cases, causing evolving symptoms amid CDC vaccine recommendation changes.

A medical officer at the US Centers for Disease Control and Prevention who was working on the committee that was weighing changes to the agency’s Covid-19 vaccine recommendations resigned on Friday, the same day officials the US Department of Health and Human Services announced they had removed the CDC recommendation for pregnant women and healthy children to get Covid-19 vaccines.

There was a notable absence last week when U.S. Health and Human Services Secretary Robert F. Kennedy Jr. announced in a 58-second video that the government would no longer endorse the COVID-19 vaccine for healthy children or pregnant women.

The Centers for Disease Control and Prevention now says that kids with no underlying health conditions "may receive" COVID-19 vaccines, dropping a broad recommendation for all children to get vaccinated against the virus.

The Centers for Disease Control and Prevention has issued updated advice on the COVID-19 vaccine days after Health and Human Services Secretary Robert F. Kennedy Jr said the agency would no longer recommend the shot to children and pregnant women.

An official at the CDC who oversaw the agency's recommendations for COVID-19 vaccines has resigned, following a week of mixed messaging from federal health officials.

The resignation follows an order by Health and Human Services Secretary Robert F. Kennedy Jr. to change the agency's guidance.

Aging weakens your immune system, making you more vulnerable to preventable diseases. The CDC recommends five critical vaccines for adults over 50 that could save your life.