1. China Global Television Network (CGTN) website, Chinese President Xi Jinping’s 2020 New Year speech, available at: https://news.cgtn.com/news/2019-12-31/Full-text-Chinese-President-Xi-Jinping-s-2020-New-Year-speech--MSnhLaJmIE/index.html, 31 December 2019.
2. Centers for Disease Control and Prevention website, ‘History of 1918 Flu Pandemic’, available at: https://www.cdc.gov/flu/pandemic-resources/1918-commemoration/1918-pandemic-history.htm, 21 March 2018.
3. HIV website, ‘A Timeline of HIV and AIDS’, available at: https://www.hiv.gov/sites/default/files/aidsgov-timeline.pdf, 2020.
4. Pasteur Institute website on COVID-19 disease, available at: https://www.pasteur.fr/en/medical-center/disease-sheets/covid-19-disease-novel-coronavirus, 29 July 2020.
5. World Health Organization (WHO) website, ‘Origin of SARS-CoV-2’, available at: https://apps.who.int/iris/bitstream/handle/10665/332197/WHO-2019-nCoV-FAQ-Virus_origin-2020.1-eng.pdf, 26 March 2020.