Your blood can hold a record of past illnesses. That information can reveal how many people have had a certain infection – like 58% of Americans having had COVID-19 by the end of February 2022.

England has stopped offering free COVID tests, amid a large surge in cases. Here’s what that could mean.

Dogs have such sensitive noses that they can be trained to detect the odors of crop pests, endangered species, illegal drugs – and diseases like COVID-19.

A nationwide genomic surveillance system analyzes positive COVID-19 tests to build a picture of which variants are spreading in the population.

Each home testing kit contains around 10 grams of plastic.

The Biden administration intends to distribute an additional 500 million at-home rapid COVID tests starting in January.

Vaccinated people can still get infected with the coronavirus. So if you have symptoms of COVID-19, getting tested can protect others and help health officials keep an eye on the virus.

Graphene based COVID tests are quick and robust.

A new over-the-counter COVID-19 test has been authorized by the FDA. Though it can be used to test people with and without symptoms, moderate cost and limited production mean it isn't a game-changer.

In September, production of rapid tests really ramped up in the US. But due to low accuracy and massive numbers needed, these tests alone are unlikely to have much of an effect on the pandemic.