What started out as a breakout in one country has turned into a pandemic that has taken the lives of well over 11,000 people across the globe. In its early stages, COVID-19 was often compared to the ...

Infections acquired by patients in intensive care units (ICUs) are bad news. These patients, many on life support, are already vulnerable. An infection will increase their chance of dying.

Before the Covid-19 pandemic struck, few non-epidemiologists had come across the concept of "herd immunity." That changed when some governments made it the basis of their initial pandemic control ...

Add Yahoo as a preferred source to see more of our stories on Google. Former US Surgeon General Dr. Jerome Adams says the ongoing measles outbreak is a critical moment for Health and Human Services ...

A low-cost, protein-based COVID-19 vaccine tested in rhesus monkeys by Stanford Medicine researchers and colleagues offered immunity against known variants for at least one year. Researchers hope the ...

After nearly three years of keeping COVID under control, China is experiencing a massive new wave of COVID infections. The official figures reporting 60,000 deaths between December 8 and January 12 ...

To the editor: The new leaders at the U.S. Food and Drug Administration and Department of Health and Human Services say COVID-19 vaccines will require additional testing before being approved for ...

As more and more of the United States population gets vaccinated against COVID-19, many are wondering: when will enough people be vaccinated for life to return to normal? That question doesn't have a ...

Public-health officials in the U.S., unlike their counterparts elsewhere, have steadfastly focused on Covid-19 vaccines in fighting the pandemic, acting as if natural immunity following Covid-19 ...

Monica Hesse described in her July 15 op-ed, “There’s no vaccine for this,” her dismay at the state of U.S. measles vaccination rates. She fears that the loss of herd immunity will harm those who aren ...