WHO officials say coronavirus antibodies may wane after seve
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World Health Organization officials said 13 July that patients who recover from Covid-19 may be able to get the coronavirus again, adding that studies suggest their immunity may wane after a few months.

Emphasizing that scientists don’t yet have a complete answer, Dr Maria Van Kerkhove, head of the WHO’s emerging diseases and zoonosis unit, said patients “do mount some level of an immune response.”

In the case of the Covid-19 virus, health officials have said there is insufficient data to indicate that antibodies ensure immunity against the virus.

“We don’t know yet whether it’s possible with this particular virus ... We do know with other coronaviruses that is the case, and there is some data out there that may suggest that immunity will wane over time, but that is not fully known at this point,” said Dr Mike Ryan, executive director of the WHO’s health emergencies program.

A study published in Nature Medicine last month showed that coronavirus antibodies could last only two to three months after a person becomes infected with the virus.

Dr Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, said in early June that a vaccine may not provide long-term immunity if Covid-19 behaves like other coronaviruses.

Source: https://www.cnbc.com/2020/07/13/who-officials-say-coronavirus-antibodies-may-wane-after-several-months.html
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