, WHO. Coronavirus WHO novel coronavirus, 2020.

J. Hellewell, S. Abbott, and A. Gimma, Feasibility of controlling COVID-19 outbreaks by isolation of cases and contacts, Lancet Glob Health, vol.8, pp.488-96, 2020.

Y. Ng, Z. Li, and Y. X. Chua, Evaluation of the effectiveness of surveillance and containment measures for the first 100 patients with COVID-19 in Singapore, MMWR Morb Mortal Wkly Rep, vol.69, pp.307-318, 2020.

G. Kampf, D. Todt, S. Pfaender, and E. Steinmann, Persistence of coronaviruses on inanimate surfaces and their inactivation with biocidal agents, J Hosp Infect, vol.104, pp.246-51, 2020.