@joelewi53642335 @JReinerMD @dr_kkjetelina @VickiShanmugam Time and dosage matter. Part-time masking still reduces risk. Also, more people potentially exposed to infectious carrier on plane walking around vs sitting in one place.
@joelewi53642335@JReinerMD@dr_kkjetelina@VickiShanmugam时间和剂量问题。兼职掩蔽仍然可以降低风险。此外，在飞机上四处走动而不是坐在一个地方可能接触传染性携带者的人更多。