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Researchers around the globe are working with unprecedented speed to find the vaccines we need to find our way through the pandemic. What’s the bar for safety and effectiveness?
Antibodies should indicate if someone has had an infection in the past. But the promise of “immunity testing” is plagued by uncertainty about how the immune system responds to the coronavirus, as well as concerns about the tests’ accuracy.
Antibiotics abound, but virus-fighting drugs are harder to come by, and Covid-19 amply shows how much we need them. Fortunately, scientists are getting better at making and finding them.
Some children have been hospitalized and some have died, but at a tiny fraction of the adult rate. As children head back to school, scientists are hoping that research will provide answers.
An immune reaction gone wild seems to be linked with the most severe cases of pandemic Covid-19. Here’s what happens.
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