(CNN)A weeks-long testing delay that effectively blinded public health officials to the spread of the coronavirus in the US might have been avoided had federal agencies fully enacted their own plan to ramp up testing during a national health crisis.The plan, which is spelled out in an April 2018 agreement between the Centers for Disease Control and three of the biggest associations involved in lab testing, called for boosting the capacity of public health labs, bringing big commercial labs into the testing process early, and making sure labs would have whatever they needed to mount a rapid, large-scale response.But over January and February, agencies within the Department of Health and Human Services not only failed to make early use of the hundreds of labs across the United States, they enforced regulatory roadblocks that prevented non-government labs from assisting, according to documents obtained by CNN, and interviews with 14 scientists and physicians at individual laboratories and national laboratory associations.When the CDC stumbled out of the blocks in early February, releasing a flawed test that took it weeks to correct, labs across the country had been effectively sidelined. Many public health labs were waiting for the revised CDC tests, while commercial and


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