It can spread person to person, even if someone is showing no symptoms. The next in line can continue to pass it on. The incubation period is so long that people may not know where or when they picked it up.
Details that emerged last week about the new virus from China show how challenging it could be to control this outbreak, health experts say.
At first, some were relieved that the virus hasn’t proved fatal as often as those that caused SARS, Ebola or some other recent menaces. Now there’s worry that it still might cause a lot of deaths if it spreads far more than those other viruses did.#####
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