@BestinthePNW_ @D28EquityNow @drlucymcbride @kprather88 One way masking works at a fraction of universal masking, and ignores people who legitimately can't wear a mask, imperfect fit or use, practicalities such as needing to take a sip of water, potential (probably low not zero) routes such as eyes or fomites.
@BestInEpnw_@D28EquityNow@drlucymcbride@kprather88单向掩蔽的效果仅为通用掩蔽的一小部分，并且忽略了那些合法不能戴口罩的人、不完美的佩戴或使用、需要小口喝水等实际情况、眼睛或蚊子等潜在（可能不是零）路径。