Four ‘generations’ of spread seen with virus in China, alarming experts
Emerging data on the new virus circulating in China adds to evidence there is sustained human-to-human transmission in the city of Wuhan, and that a single case was able to ignite a chain of other infections.
The World Health Organization reported Thursday that there have been at least four generations of spread of the new virus, provisionally called 2019-nCoV, meaning a person who contracted the virus from a non-human source — presumably an animal — has infected a person, who infected another person, who then infected another person.
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