The proximity of people and animals in southern China in particular has long made it an incubator of global epidemics that start in rural areas and then spread around the globe by way of Hong Kong , which has Asia 's busiest airport for international departures .
Hong Kong
China
/location/administrative_division/country
Asia
Hong Kong
/location/location/contains
China
Hong Kong
/location/location/contains
Asia
China
/location/location/contains
China
Hong Kong
/location/country/administrative_divisions
LOCATION
China
LOCATION
Hong Kong
LOCATION
Asia