Was fifteen minutes of exposure the right measure to determine when someone who was in contact with an infected individual might have contracted the virus? It seemed like an arbitrary judgment and led to manipulation of the agency’s advice. The CDC eventually changed its guidance from fifteen minutes of sustained exposure to fifteen minutes of cumulative exposure, but how could you measure your cumulative exposure to a person?8 It was almost as if the CDC was treating exposure to the virus like exposure to radiation and trying to measure a cumulative dose. It was reported that some
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