Not long ago, we were all masters of covid math. When the pandemic began in 2020, the number stuck in our minds was 14: If we (or any close contact) got a positive COVID-19 test, we were supposed to ...

The most common respiratory viruses that cause flu, colds, and RSV tend to cluster in the fall and winter months. Though that means months of elevated risk for sickness, "cold and flu season" is a ...

As the toll from the COVID-19 pandemic continued to mount, antiviral medications such as Paxlovid were hailed by health officials as an important way to reduce the risk of severe illness or death. Yet ...

The COVID-19 virus can persist in the blood and tissue of patients for more than a year after the acute phase of the illness has ended, according to new research from UC San Francisco that offers ...

Deaths from COVID-19 have slowed significantly but continue adding to a tally of more than 7 million deaths from the virus in the nearly five years since the World Health Organization (WHO) declared a ...

The concept is crucial to curbing the novel coronavirus. It's also complicated. If you've been reading coronavirus news coverage, you've likely stumbled across a reference to a term called "R0." It's ...

A new strain of COVID-19 prevalent in China has been identified in multiple areas in the United States. The new strain—known as COVID-19 NB 1.8.1—was first detected in China in January this year, and ...

Just last week, the US Food and Drug Administration delayed a decision on full approval of Novavax’s Covid-19 vaccine even though it was on track to be cleared, leaving many public health experts ...

Forbes contributors publish independent expert analyses and insights. I write about health and U.K. health policy. Feb 22, 2025, 09:20am EST Flying bat action shot of hunting animal in natural forest ...

For many people, particularly following vaccination, infection with SARS-CoV-2, the virus that causes COVID-19, resolves within a few days. But for others, it results in long COVID, a variety of often ...

The Department of Defense surreptitiously operated an anti-vaccine campaign aimed at Chinese vaccination efforts in the Philippines during the height of the COVID-19 pandemic, according to a bombshell ...