Children who were vaccinated against Covid-19 last season had a “substantially lower risk” of emergency department and urgent care visits related to the virus, according to a report published by the US Centers for Disease Control and Prevention on Thursday.

Last season's COVID-19 vaccine significantly reduced kids' emergency room and urgent care visits, newly released Centers for Disease Control and Prevention data shows. Why it matters: The data released on Thursday comes amid intensifying calls from anti-vaccine groups to pull immunizations off the market.

The Centers for Disease Control and Prevention Dec. 11 released a report that found last year’s version of the COVID-19 vaccine was 76% effective in preventing emergency department or urgent care visits for children ages 9 months to 4 years.

During the winter months, you may see more cases of respiratory illness, this is often because people are indoors more allowing viruses to pass more easily.

New data published by the U.S. Centers for Disease Control and Prevention this week indicates that recent COVID vaccines were effective at keeping 76% of children aged 9 months to 4 years old out of emergency rooms and urgent care units.

Children who received last season's updated Covid-19 vaccine had a substantially lower risk of emergency and urgent care visits related to the virus, according to a CDC report.

The US Food and Drug Administration intends to put a “black box” warning on Covid-19 vaccines, according to two people familiar with the agency’s plans.

The FDA intends to place a black box label—its most serious warning—on COVID-19 vaccines, according to reporting by CNN. It is unclear if the warning would apply to Moderna’s, Pfizer/BioNTech’s and Novavax’s shots,

The epidemic trend of COVID-19 has gone from "not changing" to "growing" in the United States, according to the CDC.