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Iver's avatar

Thank you for helping us think this through (as you so frequently do!) It just seems this action is falsely reassuring. If it takes around 3 days for an infected person's PCR to turn positive, and their PCR was 48 hours ago, then (assuming the PCR is always correct) doesn't a negative test just mean they weren't infected 5 days ago? Even if not infected now, they'd be at risk of picking up the virus on 15-20+ hours of flying where most passengers were unmasked. At least the sequencing might help (detect new variants). Meanwhile I believe a large % of people in the US aren't worried about transmission anyway. Plus waiting a week to implement the policy doesn't exactly signal urgent concern. I hope I'm missing something science-based about the rationale, and I realize the importance of reassuring the public - but false reassurance usually backfires eventually.

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Vaishali Vora's avatar

Thank you. Any word on the effectiveness of the fall booster against the new strain offshoots on the horizon that you spoke of?

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