comment: >
  
  It's more likely that the Chinese public and government was getting tired of restrictions.
  But I like your positivity there and cross fingers for more lock down.
context: and if they didnt have it at the start of the flight they would by the end.. >
  
  I mean it's gotta be at least 95% right, if 50% of the passengers are infected >
  
  RTPCR should be taken 5 to 7 days after exposure. Surely some of them have false negative results. The positive results are probably those who already have the virus before the flight.