SEATTLE, Wash. — King County has declared a state of emergency due to the coronavirus outbreak that has resulted in the death of six people in the Puget Sound area.

KOMO News reports the victims include a man in his 70s and a woman also in her 70s — both with underlying health conditions.

A woman in her 80s and a Snohomish County man in his 40s have also died.

Of the 12 other confirmed cases, nine are King County residents and three are from Snohomish County.

Researchers say the virus may have been circulating in the state for up to six weeks undetected, which could mean hundreds of undiagnosed cases.