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To: RealMuLan who wrote (33530)	5/12/2003 3:28:05 AM
From: EL KABONG!!!	Respond to of 74559

Yiwu Zhang, WHO sounds very unreasonable here. I would tell them take it or leave it. That is the data China has! Bad attitude... The Chinese medical professionals are likely not inept. For whatever reasons, they failed to gather and/or share epidemiological information in a timely manner. about 50% of SARS patients do NOT know where did they get infected with SARS. The actual percentage is probably higher. But medical professionals don't expect the patient to know the wheres and hows. Making that determination is the job of the epidemiologist(s). The patients merely supply the "raw data". Like one example I read, a guy from HeBei province stopped over in Beijing for 2 hours, and the only thing he did was taking the subway train. and one week later after he returned, he was confirmed with SARS. and there are millions of people use subway every day in Beiing, at least before this SARS, so how the hack could the authority know who gave this guy SARS?? Which train? What time of day/night? Which car was he in, towards the front of the car, the back or in the middle? Anyone on the train look sick? Anyone coughing? Where else in Beijing did he go? Who did he encounter? Each patient gets a questionnaire that s/he fills out, which becomes the raw data that the investigators work from. This is a very standard procedure throughout the world. As you pointed out, millions of people take the subways every day. But millions of people don't carry the SARS virus. Only a mere handful have the virus compared to the millions that don't. And when an investigator can match up a prior patient who inadvertently or unknowingly exposed a later patient to the virus, then they (the investigators) can hone in on a possible specific method of transmission, which can further aid in the development of a vaccine or a possible cure. This is very detailed and painstaking work. It is what the professionals are trained to do. Why it has not been done in China is what is unusual. KJC