WASHINGTON, March 2 (The Guardian) - Four more people in Washington state have died from coronavirus, officials have said.

This brings the total number of US fatalities to six.

At a news conference Monday Jeff Duchin from Public Health Seattle & King County said five of the deaths were people from King County and one was a person from Snohomish County, north of Seattle, AP reported.

Researchers said earlier that the virus may have been circulating for weeks undetected in Washington state.