It’s too soon to understand the effectiveness of a fourth vaccine dose, according to the EU’s top drug regulator. But some countries have already authorized the shot. Fourth doses of the COVID-19 vaccine don’t appear...
Researchers at MIT have taught artificial intelligence to recognize a coronavirus infection by the sound of coughing. Will we be able to test ourselves every morning by coughing into our smartphones? The fact that smartphones...
The World Health Organization plans to make 120 million rapid-diagnostic coronavirus tests available for people in lower- and middle-income countries. The tests are fast, simple and cheap — but are they reliable? The World Health...
