RT: After parents launch a petition demanding their children be permitted to wear facemasks at school, Los Angeles County public health officials advise that "masks give a false sense of protection and add to a climate of alarm, without being of help”
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RT：在家长发起请愿书，要求允许他们的孩子在学校戴口罩后，洛杉矶县公共卫生官员建议“口罩给人一种虚假的保护感，并在没有帮助的情况下增加了警觉气氛”
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