Investigation of three clusters of COVID-19 in Singapore: implications for surveillance and response measures

Rachael Pung, Calvin J. Chiew, Barnaby Edward Young, Sarah Chin, Mark Chen, Hannah Clapham, Alex R. Cook, Sebastian Maurer‐Stroh, Matthias Paul HS Toh, Cuiqin Poh, Mabel Sheau Fong Low, Joshua Lum, Valerie T J Koh, Tze Minn Mak, Lin Cui, Raymond Lin, Derrick Heng, Yee‐Sin Leo, David Chien Lye, Vernon J. M. Lee, Kai‐Qian Kam, Shirin Kalimuddin, Seow Yen Tan, Jiashen Loh, Koh Cheng Thoon, Shawn Vasoo, Wei Xin Khong, Nur-Afidah Md Suhaimi, Sherlynn JH Chan, Emma Zhang, Olivia Seen Huey Oh, Albert Ty, Charlene Tow, Yi Xian Chua, Wei Liang Chaw, Yixiang Ng, Farid Abdul-Rahman, Shafiq Sahib, Zheng Zhao, Cheryl Tang, Constance Low, Ee Hui Goh, Georgina Lim, Yanan Hou, Imran Roshan, James Tan, Kelly Foo, Khine Nandar, Lalitha Kurupatham, Pei Pei Chan, P. Ernest Raj, Yijun Lin, Zubaidah Said, Anne Lee, Cherie See, Jessey Markose, Joanna Weihui Tan, Guanhao Chan, Wanhan See, Xinyi Peh, Vincent Cai, Wen Kai Chen, Zongbin Li, Roy Jiunn Jye Soo, Angela Chow, Wycliffe Enli Wei, Aysha Farwin, Ang Li