Screening for symptoms of COVID-19 and self-quarantine are good at preventing sick people from spreading the coronavirus. But more and more evidence is suggesting that people without symptoms are spreading...

COVID-19 has created a new norm for human interaction: social distancing, improving hygiene with soap and hand sanitizer, wearing a mask and quarantining. But what does this mean for the more than 2 million...

The Chinese government has quarantined Wuhan, a port city of 11 million people, and it has restricted travel to and from several other cities, including Beijing, to contain the coronavirus that has sickened...