Emerging Infectious Diseases (Apr 2022)

Time from Exposure to Diagnosis among Quarantined Close Contacts of SARS-CoV-2 Omicron Variant Index Case-Patients, South Korea

  • Hye Ryeon Lee,
  • Young June Choe,
  • Eun Jung Jang,
  • Jia Kim,
  • Ji Joo Lee,
  • Hye Young Lee,
  • Hanul Park,
  • Sang Eun Lee,
  • Moonsu Kim,
  • Seonggon Kim,
  • Hanna Yoo,
  • Ju-Hyung Lee,
  • Hyun Jeong Ahn,
  • Mi-Young Go,
  • Won Ick Kim,
  • Bu Sim Lee,
  • Hwa-Pyeong Ko,
  • Jeonghee Yu,
  • Eun-Young Kim,
  • Hyoseon Jeong,
  • Jae-Hwa Chung,
  • Jin Su Song,
  • Jihee Lee,
  • Mi Young Kim,
  • Young-Joon Park

DOI
https://doi.org/10.3201/eid2804.220153
Journal volume & issue
Vol. 28, no. 4
pp. 901 – 903

Abstract

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To determine optimal quarantine duration, we evaluated time from exposure to diagnosis for 107 close contacts of severe acute respiratory syndrome coronavirus 2 Omicron variant case-patients. Average time from exposure to diagnosis was 3.7 days; 70% of diagnoses were made on day 5 and 99.1% by day 10, suggesting 10-day quarantine.

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