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https://www.washingtonpost.com/health/2020/03/21/coronavirus-testing-strategyshift/
In an ideal world, public health officials say they should have done wide scale surveillance testing of people with respiratory symptoms much earlier. But city-by-city and state-by-state, officials say they are nearing — or in some cases have already crossed — the line when they must make a hard trade-off:
“In the 2009 influenza pandemic, we stopped testing for H1N1 once the level of illness in the community was so high that it just made more sense to treat based on clinical symptoms,” said Jennifer Nuzzo, an epidemiologist with the Johns Hopkins Bloomberg School of Public Health’s Center for Health Security.
In the coronavirus health crisis, there are no specific treatments.
“Our only defense is to tell people to stay home and to hope that sick people isolate themselves,” she said. While it’s essential for testing capacity to increase, the general public needs to understand what health officials are up against given the shortages.
“We have to target our resources and reserve testing for those who need it most: severely ill and those in high risk professions, such as health care workers,” she said. “We’d cause more harms by encouraging the general public to run out and get tested if they are well or experiencing mild illness.”