请问楼主标题内容的出处?麻烦贴出来
以下CDC相关网页:
The best way to prevent COVID-19 infection is to avoid exposure to this virus and use healthy habits.
www.cdc.gov
截至回这个贴的时间点,摘录:
Wear a facemask if you are sick
If you are sick: You should wear a facemask when you are around other people (e.g., sharing a room or vehicle) and before you enter a healthcare provider’s office. If you are not able to wear a facemask (for example, because it causes trouble breathing), then you should do your best to cover your coughs and sneezes, and people who are caring for you should wear a facemask if they enter your room. Learn what to do if you are sick.
If you are NOT sick: You do not need to wear a facemask unless you are caring for someone who is sick (and they are not able to wear a facemask). Facemasks may be in short supply and they should be saved for caregivers.