In all 3 circumstances, the same root cause is responsible: Big Industry.
1) the medical profession has thousands of careers and work opportunities on the line, influenced by the mere appearance of being negligent.
Not in China.
2) the meat and dairy industry is suffering from the unsavory effects that big name oligopolies introduce when they battle it out for low low prices.
Doesn't really apply here, since the source of the bacteria is poorly managed waste treatment plants.
3) china is trying to enter into a market space where it has to compete with the shit caused by the big names in western marets, and as such, has to be competative against even the sickening shit going on listed above: the only way to do that? Do it themseves, more radically, with no oversights or controls
Closer to the truth. Sewage treatment plants are better than burying it in a shallow hole. But they're still not spending the extra couple of yuan to do it right.