Some information you come across about COVID-19 may be out of date or false. Learn about COVID-19 myths so you can bust them when you see them.

As we age, the immune system gradually declines and becomes less effective at responding to infections and vaccines.

Yearly Covid-19 Booster Recommendations in Canada, Europe, and Australia. Although the rapid development of multiple Covid-19 vaccines in 2020 represents a major scientific, medical, and regulatory ...

Since May, highly contagious "FLiRT" coronavirus variants – a term for new mutations of Omicron – have been driving a rise in infections and emergency room trips. Virus levels at local wastewater ...

As people grow older, their immune system slowly becomes less effective. This natural process means the body often has a ...

Ziyad Al-Aly is chief of research and development at VA St. Louis Health Care System and a clinical epidemiologist at Washington University in St. Louis. From the very early days of the pandemic, ...