March 11 marks the fourth anniversary of the World Health Organization’s declaration that the COVID-19 outbreak was a pandemic. COVID-19 hasn’t gone away, but there have been plenty of actions that ...

Five years ago, on March 11, 2020, the World Health Organization declared COVID-19 a pandemic. Whether it still is depends on who you ask. There are no clear criteria to mark the end of a pandemic, ...

Early in the beginning of the COVID-19 pandemic, scientists predicted the coronavirus would mutate slowly. They were wrong. Hundreds of thousands of viral mutations and multiple seasonal waves later, ...

Dr. Pappas can be contacted at [email protected]. This letter was published on July 9, 2025, at NEJM.org. No potential conflict of interest relevant to this letter was reported. Zhang B, Thacker D, ...

"In 2020 — after three years of immunosuppression — when I learned of mRNA vaccine research for MS, I was relieved," writes ...

The Cleveland Clinic is a large and well-respected medical center based in Cleveland, Ohio, so purported news that it’s warning millions of people will soon die following COVID-19 vaccination would ...

COVID-19 vaccination reduces the risk of death from COVID-19. Social media posts have misused survey data and adverse events reports to falsely claim that COVID-19 vaccines have killed more people ...

Although there is less certainty about the future of COVID-19 vaccines this fall and in the long term, one thing is clear: complacency and stasis are not options. We must continue to prioritize ...

The mRNA COVID-19 vaccines have a good safety record and have saved millions of lives. But viral posts claim the contrary, citing a recent peer-reviewed article authored by known COVID-19 ...

The COVID-19 pandemic exacerbated and brought into focus the ongoing disproportionate burden on mothers when it comes to ...