Data with the exception of France and Italy was collected starting on 3/9/2020. New cases for those new areas was not available until 3/10/2020; trends for those new areas was not valid until 3/13/2020.
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Historical notes

• March 17, 2020:
  • European Union seals its borders for 30 days.
  • UK epidemiology report impacts US and UK strategies. https://www.cnn.com/2020/03/17/health/coronavirus-uk-model-study/index.html
  • UK asks nationals to avoid non-essential foreign travel (schools still open)
• March 10, 2020: Austria banned Italians from entering its country.
• March 10, 2020: Italy "locked down" its country. Public gatherings are banned, ranging from weddings to funerals, sports events and religious services, and Italians are encouraged to stay home and "limit social contact as much as possible." Travel is only allowed for urgent work situations and emergencies or health reasons.
• March 8, 2020: Italy "locked down" the region of Lombardy and 14 neighboring provinces.