1. Ghebreyesus TA. WHO Director-General's statement on IHR Emergency Committee on Novel Coronavirus (2019-nCoV). Speech, Geneva, 30 January 2020. WHO Director-General's Speeches, World Health Organization. Available from: https://www.who.int/director-general/speeches/detail/who-director-general-s-statement-on-ihr-emergency-committee-on-novel-coronavirus-(2019-ncov) [accessed 10.9.21].
2. COVID-19 outbreaks in a transmission control scenario: challenges posed by social and leisure activities, and for workers in vulnerable conditions, Spain, early summer 2020;Guzmán-Herrador;Eurosurveillance,2020
3. Industry sectors highly affected by worksite outbreaks of coronavirus disease, Los Angeles County, California, USA, March 19–September 30, 2020;Contreras;Emerg Infect Dis,2021
4. COVID-19 outbreak on a passenger ship and assessment of response measures Greece, 2020;Hatzianastasiou;Emerg Infect Dis,2021
5. Epidemiologic evidence for airborne transmission of SARS-CoV-2 during church singing Australia, 2020;Katelaris;Emerg Infect Dis,2021