Hong Kong (CNN)Two members of a World Health Organization (WHO) team investigating the origins of the coronavirus pandemic have been blocked from flying to China after failing a coronavirus antibody test.
An international team of 13 scientists was due to land in the central Chinese city of Wuhan, where cases of the coronavirus were first recorded in late 2019, on Thursday.
But two members of that team remain in Singapore, the WHO said in a series of tweets, after they “tested positive for IgM antibodies.”
IgM antibodies are among the earliest potential signs of a coronavirus infection, but could also appear in someone who has been vaccinated or previously infected (but is no longer a carrier) of the virus.
False positives are also possible with such tests. Since November 2020, travelers flying into China have to show negative results for an IgM antibody test, and a PCR test, before they will be allowed to enter.
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Update #1: China bans two WHO coronavirus investigators from entering country after positive antibody tests (The Hill)
Update #2: 2 WHO experts stuck in Singapore for more antibody tests as rest of team arrive in China’s Wuhan for fact-finding mission (RT)
WNU Editor: I am sure they are going to work it out. The guidelines to enter China are very tough. You have to show negative results for an IgM antibody test, and a PCR test, before being allowed to enter. There is also a quarantine period. I for one would not be surprised this becoming the standard for most countries in the coming months.