I think their problems are long standing--rural poverty combined with very high population density is a lethal mix. Throw in agricultural practices and culinary peculiarities (particularly among the Cantonese), and a bad situation gets worse.
"Throw in agricultural practices and culinary peculiarities (particularly among the Cantonese), and a bad situation gets worse"
No question. . .save the one the goes begging; when does China move into the 21st century or even the twentieth century with regard to change.
'Terrorist bugs' and terrorist minds have much in common; both breed in ignorance and unenlightened environments.