TOKYO -- After a slow start, Japan has stepped up its response to the new coronavirus over the past two weeks. But health officials are still being asked the same question at their weekly briefings: ...

The moment that coronavirus infects a healthy cell has been captured under a microscope for the first time. Researchers from the Oswaldo Cruz Foundation in Brazil have used a powerful electron ...

This electron microscope photo provided by the National Institute of Infectious Diseases shows the coronavirus isolated at the facility. (Photo courtesy of the National Institute of Infectious ...

Add Yahoo as a preferred source to see more of our stories on Google. Testing wastewater for diseases and viral activity gained prominence during the pandemic, but scientists are concerned that ...