Wuhan shuts down public transportation to control spread of coronavirus (COVID-19).

Sources:

• 
  February 28, 2020. “The Lockdown: One Month in Wuhan.” Runtime of embedded video: 33:14.
  https://news.cgtn.com/news/2020-02-28/The-lockdown-One-month-in-Wuhan-OsaehknbVu/index.html.
  News, Video.
• 
  January 23, 2020. BBC News. “Coronavirus: Wuhan Shuts Public Transport over Outbreak,” China. Runtime of embedded video: 2:03.
  https://www.bbc.com/news/world-asia-china-51215348.
  News, Video.
• 
  May 12, 2020. Susan V. Lawrence. “COVID-19 and China: A Chronology of Events (December 2019-January 2020).” R46354. Congressional Research Service.
  https://crsreports.congress.gov/product/pdf/R/R46354/1.
  Government.