And of those 46 21 testing positive, 19 of them crew members who are now staying behind the rare sight of a yellow flag tonight signifying contagion onboard.

And what now?

For the 2400 passengers who are now disembarking, we know they'll be sent to four locations here in the U.

S.

For quarantine.

And tonight, as they come ashore the governor of Washington State with a sobering warning about where the outbreak may be headed, here's NBC's chief national correspondent.

Back up in tonight from California tonight.

Frustration mounting aboard that virus stricken ship.

We're getting a little discouraged, Theo offloading process grindingly slow and for many passengers confusing once we get off, which will probably be tomorrow.

We still have 14 more days.

So mama way different E s sake of her husband and three kids among the lucky ones.

They disembarked and were promptly busted.

Two weeks of quarantine Tonight, officials tell us that ship is flying the yellow flag in international signal that it's under quarantine and all 19 of the infected crew members now back on the ship for isolation.

One passenger telling CNN the rules kept changing yesterday.

They had us where we had to maintain six speed and distance for everyone last night to exit the boat.

They have a standing.

Health officials say the outbreak on board a major concern, especially since AH 1000 of its passengers are 70 or older, the most vulnerable age group.

And in Washington state, we're seeing how unforgiving the virus can be for the elderly.

19 of the state's 22 deaths at this nursing home and almost all of the surviving residents now infected this hospital.

Now, using a drive thru to test its employees, the governor saying Washington State is now bracing for an explosion of cases In seven or eight weeks, there could be 64,000 people infected in the state of Washington if we don't somehow slow down this epidemic and the next week could be 100 and 20,000 and the next week could be 1/4 1,000,000.

Those numbers got a lot of attention today, Matt, with us again tonight from California.

I know authorities in California tonight, Matt are reassuring communities there that this whole process of bringing passengers off the ship is safe.

And in the meantime, you heard the warning from Washington State's governor about the case is spiking there, and we're learning.

Multiple nursing and long term care facilities in Washington are reporting the virus has been detected as well.

David Some very disturbing news out of Washington state in King County alone.

10 nursing homes and long term care facilities reporting Corona virus.

And just since yesterday, the number of patients statewide has nearly doubled.

Now the governor issuing some measures to try to control the spread, including limiting one visitor per patient per day in these nursing homes.

Question David.

Is it enough?

And is it soon enough?

Hi, everyone.

George Stephanopoulos here.

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