Herd immunity went from a phrase most of us had never heard of to the thing we're all waiting for in just about a year's time. "It's kind of shorthand for back to normal," said Dr. Bob Wachter, chair ...

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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 ...

Remember herd immunity, the early aspirational goal of our COVID strategy? It has arrived, at least according to some recent findings of the CDC’s Morbidity and Mortality Weekly Reports (MMWR). The ...

Allowing the virus to grow unchecked would create unthinkable loss of life. On June 26, Dr. Anthony Fauci announced it's "unlikely" that a COVID-19 vaccine with 70-75% efficacy taken by two-thirds of ...

Hassan Vally does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

To stop the spread of an infectious disease like measles, you don’t have to vaccinate everyone. But you do have to vaccinate many. Just how many? To let you discover for yourself, we simulated an ...