There is no coronavirus vaccine. Medications for COVID-19 are still being tested. Across the U.S., states that once acted as if the pandemic was going away are setting new daily records for infections ...

Large-scale contact tracing is needed to prevent the ongoing spread of the novel coronavirus, according to the authors of a study detailing how a Chinese city benefited from the approach. Contact ...

Large numbers of contact tracers have been fired without warning by Test and Trace, after a manager claimed they were told to "reduce the number of staff as the number of cases reduces". The contact ...

The law of large numbers describes how the results of an experiment will get closer to the expected value if a person repeats it a significant number of times and calculates an average. It bears some ...