Evaluation of the Effectiveness of Surveillance and Containment Measures for the First 100 Patients with COVID-19 in Singapore — January 2–February 29, 2020
Early Release / March 13, 2020 / 69
Yixiang Ng, MSc1*; Zongbin Li, MBBS1*; Yi Xian Chua, MSc1; Wei Liang Chaw, MSc1; Zheng Zhao, MSc1; Benjamin Er, MSc1; Rachael Pung, MSc1; Calvin J. Chiew, MPH1; David C. Lye, MBBS2,3,4,5; Derrick Heng, MPH1; Vernon J. Lee, PhD1,6* (View author affiliations)
Summary
What is already known about this topic?
First detected in China in late 2019, coronavirus disease 2019 (COVID-19) transmission has spread globally.
What is added by this report?
Singapore implemented a multipronged surveillance and containment strategy that contributed to enhanced case ascertainment and slowing of the outbreak. Based on review of the first 100 cases, the mean interval from symptom onset to isolation was 5.6 days and declined after approximately 1 month.