While everyone would like an exact measure of how every disease is affecting society, that simply doesn't exist. "We don't even have a good measure of how many (heart attacks) there are every day," which would seem like a relatively easy thing to (track), noted Marc Lipsitch, a Harvard University professor of epidemiology. More comprehensive tracking is not possible with current resources and medical (record-keeping), some public health advocates say. "The fact that it is a challenge to come up with these data proves that we have (underdeveloped) surveillance systems in this country," said Jeff Levi, executive director of Trust for America's Health, a Washington-based public health research organization. Most disease investigation and (case-counting) is done by state and local health departments. But quality varies state to state, and in many places it may be getting worse: State budget shortfalls and other problems led to the (elimination) of 7,000 health department jobs last year and 8,000 more jobs in the first six months of this year.
相关阅读:
医学英语口语课程
医学英语水平免费测试