Social worker Jonathan De La Rosa gets a COVID-19 booster shot at a drive-up vaccination site in Mesquite, Texas. Some scientists argue that a booster dose should be required to be considered "fully ...

Dr. Anthony Fauci has cautioned that health officials may change the definition of "fully vaccinated" to include COVID-19 booster shots – if the data suggests it. The Centers for Disease Control (CDC) ...

A year ago, the Centers for Disease Control and Prevention (CDC) defined “fully vaccinated” against SARS-CoV-2 as having received one dose of the Johnson & Johnson (J&J) vaccine or two serial doses of ...

With the United States in the midst of another surge in COVID-19 cases driven by the Omicron variant, top health officials in the Biden administration have started rethinking the requirements that ...

The US Centers for Disease Control and Prevention might consider redefining what it means to be "fully vaccinated" against Covid-19 to include a third dose of vaccine -- but the question is when the ...