Open that package from China. Coronavirus doesn’t spread by mail.

“If I put anything on a surface, that doesn’t tell us about the real world,” he said, noting the virus is mostly spread through droplet infections. “We just don’t have any evidence that this has ever been a problem.”

The virus does not last long on objects such as letters or packages, according to the World Health Organization.

If people are ordering internationally, contracting the virus is even less of a concern, said Xi Chen, assistant professor of public and global health and economics at the Yale School of Public Health.

Chen said viruses similar to the coronavirus, such as SARS and MERS, like low temperatures and low humidity, which aren’t consistent in transit.