Early Release - Contact Tracing during #Coronavirus Disease Outbreak, South Korea, 2020 - Volume 26, Number 10—October 2020 - Emerging Infectious Diseases journal - CDC
▻https://wwwnc.cdc.gov/eid/article/26/10/20-1315_article?deliveryName=USCDC_333-DM33334
Le #confinement semble bien l’explication du nombre relativement peu élevé de #transmission par les #enfants ; ces derniers seraient même d’importants propagateurs (Cf rectification en-dessous).
We analyzed reports for 59,073 contacts of 5,706 coronavirus disease (#COVID-19) index patients reported in South Korea during January 20–March 27, 2020. Of 10,592 household contacts, 11.8% had COVID-19. Of 48,481 nonhousehold contacts, 1.9% had COVID-19. Use of personal protective measures and social distancing reduces the likelihood of transmission.
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We also found the highest COVID-19 rate (18.6% [95% CI 14.0%–24.0%]) for household contacts of school-aged children and the lowest (5.3% [95% CI 1.3%–13.7%]) for household contacts of children 0–9 years in the middle of school closure.