Correlation between travellers departing from Wuhan before the Spring Festival and subsequent spread of COVID-19 to all provinces in China
Oxford University Press -- Journal of Travel Medicine
DOI 10.1093/jtm/taaa036
  1. Coronavirus
  2. Public health emergency of international concern
  3. 2019-nCov
  4. Migration
  5. Containment
  6. Quarantine
  7. Trave

We found a strong correlation between travel volumes departing from Wuhan, Hubei Province before the Spring Festival and the extent of amplification of the outbreak of COVID-19 in China in 2020, with 100 top cities. Almost 70% of exportations were within cities in Hubei province.