Looking for more about the new H7N9 case, I stumbled across this report in Guangzhou Dayang: Zhong Nanshan: Guangdong is studying the relationship between PM2.5 and lung cancer incidence. Zhong is of course China's eminent expert in respiratory diseases, including H5N1, H7N9, and SARS. His involvement indicates the authorities are taking the smog problem seriously. The Google translation:
Second South Summit Forum of Medical Jurisprudence Medical Association, Guangdong Province, the third meeting of the Medical Society of Law held in Guangzhou on December 14 to 15. The meeting was attended Chinese Academy of Engineering academician Zhong Nanshan said when interviewed by the media, and now finds wide north are still not completely abnormal increase rate of rise of respiratory diseases, the culprit is the PM2.5 argument. However, the incidence of lung cancer is closely related with the haze.
Zhong Nanshan says that right now there is no data to prove the relationship between the authority of PM2.5 and lung cancer, and related research is also underway. But more than two decades of research up to some European and American countries is to demonstrate a high incidence of haze can cause lung cancer and other diseases. U.S. study found that for every cubic meter of air for each additional 10 micrograms of PM2.5 particles, lung cancer mortality increased by 15% to 27%; and released in July, based in Lyon, France, IARC report that there is sufficient evidence to show that exposure to outdoor air pollution can cause lung cancer, but the risk of bladder cancer will increase accordingly.
Zhong Nanshan noted that now finds wide north are still not completely abnormal increase rate of rise of respiratory diseases, the culprit is the PM2.5 argument. "Because now there is not a very accurate epidemiological survey data are abroad per cubic meter data at 70 micrograms or less, but our numbers are 5 to 10 times the others." China needs its own The results prove that at present, Guangdong is studied.