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SARS-CoV-2 antibody-positivity protects against reinfection for at least seven months with 95% efficacy

https://www.thelancet.com/journals/eclinm/article/PIIS2589-5370(21)00141-3/fulltext 

Laith J. Abu-Raddad, Hiam Chemaitelly, Peter Coyle, Joel A. Malek, Ayeda A. Ahmed, Yasmin A. Mohamoud, Shameem Younuskunju, Houssein H. Ayoub, Zaina Al Kanaani, Einas Al Kuwari, Adeel A. Butt, Andrew Jeremijenko, Anvar Hassan Kaleeckal, Ali Nizar Latif, Riyazuddin Mohammad Shaik, Hanan F. Abdul Rahim, Gheyath K. Nasrallah, Hadi M. Yassine, Mohamed Ghaith Al Kuwari, Hamad Eid Al Romaihi, Mohamed H. Al-Thani, Abdullatif Al Khal, and Roberto Bertollini
April 27, 2021
eClinical Medicine
Cornell University (Qatar)

“Interpretation: Reinfection is rare in the young and international population of Qatar. Natural infection appears to elicit strong protection against reinfection with an efficacy ~95% for at least seven months.”

© 2021 The Author(s). Published by Elsevier Ltd. User license Creative Commons Attribution (CC BY 4.0) | How you can reuse 

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breakthrough cases,COVID-19,natural immunity