“It’s been a revolution,” says Judith Breuer, a virologist at University College London.   In just over a year, the virus that causes COVID-19 has become the most sequenced virus of all time. And the pandemic is the first to be tracked in real time.

In America’s jumbled sea of COVID-19 vaccine eligibility guidelines, medically vulnerable people are being left behind. 

Health systems are struggling with the tension between  COVID-19’s immediate demands and the long-term struggle against tuberculosis—one of the deadliest infectious diseases.  

Antibody-mediated herd immunity has not been achieved in most regions, according to a

In the US CDC’s 

Think arsenic exposure is a relic of poisonings past?   Not so.  

The devastation of the late 19th century bubonic plague is often obscured from Mumbai’s public consciousness—yet it was fundamental to how the city looks today.  

No syringes. No beds. But plenty of anger over as protesters lambasted Paraguay’s slow vaccine rollout as infections spike.

Vaccination may be a pass to certain activities—but what about actual vaccine passports?  

The latest mutation of concern: A sample in Oregon was found to contain both the B.1.1.7 coronavirus mutation first discovered in the UK and the E484K mutation known as “Eek,” which has been found in variants in South Africa, Brazil, and New York City.