Even if it carries out the safety control without exception, it isn't possible for 100 % of infection prevention.
Moreover, it is necessary to be infected repeatedly to mutate as infected with a person from a person.
It is only Wuhan Virus Research that it is possible.
We understand if doing researcher 's antibody test.
A researcher comes to the thing of a source of infection if having an antibody.
The virus of a bat mutated in researcher 's body.
It mutated to the virus which it is easy for to be infected with a person from a person.
Because the immunity power was high, researcher itself didn't develop.
As a result, it made it infected with many persons while not knowing.
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