The experiments did not involve SARS-CoV-2, but researchers say the results support precautions to avoid possibly spreading COVID-19 by talking.

School shutdowns might have a relatively small effect on preventing the transmission of SARS-CoV-2, a new meta-analysis suggests, though the preliminary data point to the need for more studies.

Several studies have indicated that SARS-CoV-2 might be spread through air, but not all experts are convinced.

A preprint indicates that coronavirus transmission from surfaces is possible, but does not provide evidence that this has occurred in the COVID-19 pandemic.

More cases emerge across the country as the global death toll from COVID-19 surpasses 3,000.

A patient in California acquired COVID-19 despite not traveling to an affected area or having contact with anyone who did.

Random mutations in the SARS-CoV-2 pathogen’s genome help researchers track the spread and transmission of COVID-19, the disease it causes.

Scientists’ latest understanding of the facts, the suspicions, and the discounted rumors of SARS-CoV-2’s transmission from person to person

Claims that a woman spread the virus to a colleague in Germany before she had symptoms conflict with health officials’ interview with the patient herself.