被感染人数的差。至于100 人中有多少人会被传染无从知道。所以,打了疫苗依旧要防疫。
WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.
Copyright ©1998-2025 wenxuecity.com All rights reserved. Privacy Statement & Terms of Use & User Privacy Protection Policy