Herd Immunity against Severe Acute Respiratory Syndrome Coronavirus 2 Infection in 10 Communities, Qatar

We investigated what proportion of the population acquired severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and whether the herd immunity threshold has been reached in 10 communities in Qatar. The study included 4,970 participants during June 21–September 9, 2020. Antibodies ag...

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Detalles Bibliográficos
Autores principales: Jeremijenko, Andrew, Chemaitelly, Hiam, Ayoub, Houssein H., Alishaq, Moza, Abou-Samra, Abdul-Badi, Al Ajmi, Jameela Ali A.A., Al Ansari, Nasser Ali Asad, Al Kanaani, Zaina, Al Khal, Abdullatif, Al Kuwari, Einas, Al-Mohammed, Ahmed, Al Molawi, Naema Hassan Abdulla, Al Naomi, Huda Mohamad, Butt, Adeel A., Coyle, Peter, El Kahlout, Reham Awni, Gillani, Imtiaz, Kaleeckal, Anvar Hassan, Masoodi, Naseer Ahmad, Thomas, Anil George, Nafady-Hego, Hanaa, Latif, Ali Nizar, Shaik, Riyazuddin Mohammad, Younes, Nourah B.M., Rahim, Hanan F. Abdul, Yassine, Hadi M., Al Kuwari, Mohamed G., Al Romaihi, Hamad Eid, Al-Thani, Mohamed H., Bertollini, Roberto, Abu-Raddad, Laith J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Centers for Disease Control and Prevention 2021
Materias:
Research
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8084480/
https://www.ncbi.nlm.nih.gov/pubmed/33900174
http://dx.doi.org/10.3201/eid2705.204365
Descripción
Sumario:We investigated what proportion of the population acquired severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and whether the herd immunity threshold has been reached in 10 communities in Qatar. The study included 4,970 participants during June 21–September 9, 2020. Antibodies against SARS-CoV-2 were detected by using an electrochemiluminescence immunoassay. Seropositivity ranged from 54.9% (95% CI 50.2%–59.4%) to 83.8% (95% CI 79.1%–87.7%) across communities and showed a pooled mean of 66.1% (95% CI 61.5%–70.6%). A range of other epidemiologic measures indicated that active infection is rare, with limited if any sustainable infection transmission for clusters to occur. Only 5 infections were ever severe and 1 was critical in these young communities; infection severity rate of 0.2% (95% CI 0.1%–0.4%). Specific communities in Qatar have or nearly reached herd immunity for SARS-CoV-2 infection: 65%–70% of the population has been infected.

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