Drugmakers Pfizer Inc and BioNTech SE said on May 23 that three doses of their COVID-19 vaccine generated a strong immune response in children under age 5 and was safe and well-tolerated in their clinical trial.

North Korea on May 21 reported more than 200,000 new patients suffering from fever for a fifth consecutive day, as the country fought its first confirmed coronavirus outbreak.

The U.S. Centers for Diseases Control and Prevention (CDC) on May 19 said reports of heart inflammation linked to the Pfizer/BioNTech COVID-19 vaccine have been much lower in 5- to 11-year-old boys than in adolescents and young men, representing only a slightly elevated rate than normal.

There appears to be a rise in COVID-19 illnesses, driven by Omicron subvariants, which may be better able to evade immunity from vaccines and previous infections and lower public health measures by the public such as masking and social distancing.

An advisory panel to the U.S. Centers for Disease Control and Prevention (CDC) is meeting on May 19 to discuss whether to recommend COVID-19 vaccine booster shots for children ages 5 to 11, a group that is just 29% vaccinated so far.

Health officials are considering extending the eligibility for a second COVID-19 vaccine booster dose to people under 50 amid a steady rise in cases, with the United States seeing a threefold increase over the past month.

In a peer-reviewed study published May 17 in PLOS Medicine, scientists found that mRNA-based COVID-19 vaccines were superior to adenovirus vector-based ones across major variants of the SARS-CoV-2 virus.

The world is no better prepared for a new pandemic than it was when coronavirus emerged in 2019 and may actually be in a worse place given the economic toll, according to a panel set up by the World Health Organization (WHO) to evaluate the global response.

The U.S. Food and Drug Administration on May 17 authorized the use of a booster shot of Pfizer and BioNTech’s COVID-19 vaccine for children aged 5 to 11, making everyone in the United States over the age of 5 eligible for a third shot.

On May 17, the U.S. FDA authorized a booster of Pfizer’s vaccine for kids ages 5 to 11 years. The action comes as major cities are announcing a rise in cases. Additionally, COVID-19 would have claimed over 110,000 more lives in 2021 if not for the Pfizer-BioNTech vaccine, according to a Pfizer-sponsored report on the first year of the U.S. vaccination program.