Changes

Beijing, Shanghai, Guangzhou, and Shenzhen were the mainland Chinese cities that together accounted for 53% of all outbound international air travel from China and 69% of international air travel outside [[Asia]], whereas Chongqing is a large metropolis that has a population of 32 million and very high ground traffic volumes with Wuhan. Substantial epidemic take-off in these cities would thus contribute to the spread of 2019-nCoV within and outside mainland China.<ref>https://www.theautomaticearth.com/2020/02/the-big-lockdown/</ref>}}

Beijing, Shanghai, Guangzhou, and Shenzhen were the mainland Chinese cities that together accounted for 53% of all outbound international air travel from China and 69% of international air travel outside [[Asia]], whereas Chongqing is a large metropolis that has a population of 32 million and very high ground traffic volumes with Wuhan. Substantial epidemic take-off in these cities would thus contribute to the spread of 2019-nCoV within and outside mainland China.<ref>https://www.theautomaticearth.com/2020/02/the-big-lockdown/</ref>}}

There were about 2,300 departing international air flights from the infected area before the Chinese government alerted the public of the spread of the virus.  

There were about 2,300 departing international air flights from the infected area to [[New York City]], [[San Francisco]], [[London]], [[Tokyo]], [[Rome]], [[Istanbul]], [[Dubai]], [[Paris]], [[Sydney]], [[Bali]], [[Bangkok]], [[Moscow]], [[Osaka]] [[Japan]], [[Seoul]], and [[Singapore]]

before the Chinese government alerted the public of the spread of the virus.  

Half of all transmissible infections occur in the 24 day incubation period while a carrier shows no symptoms.<ref>https://blogaoedic.com/coronavirus-epidemic-update-15-underreporting-prevention-24-day-incubation-covid19/</ref>  ''The Guardian'' reported up to 60% of the population of planet [[Earth]] could become infected.<ref>https://www.theguardian.com/world/2020/feb/11/coronavirus-expert-warns-infection-could-reach-60-of-worlds-population</ref>

Half of all transmissible infections occur in the 24 day incubation period while a carrier shows no symptoms.<ref>https://blogaoedic.com/coronavirus-epidemic-update-15-underreporting-prevention-24-day-incubation-covid19/</ref>  ''The Guardian'' reported up to 60% of the population of planet [[Earth]] could become infected.<ref>https://www.theguardian.com/world/2020/feb/11/coronavirus-expert-warns-infection-could-reach-60-of-worlds-population</ref>