您应该在外面走时戴口罩吗？

为了保护自己和他人免受新颖的冠状病毒（Covid-19）的传播，疾病控制与预防中心建议所有在公共场合外出的人做任何重要的事情，例如购买杂货应该wear a cloth face cover over their noses and mouths。这个额外的步骤应该是结合社会疏远帮助防止疾病的传播。但是，谈到走到外面在大流行期间，您需要了解是否戴口罩。

“我们现在知道，Covid-19有无症状的无症状传播，这意味着即使是看起来健康的人也可能被感染。”国家传染病基金会and professor of preventive medicine and infectious diseases at Vanderbilt University’s School of Medicine in Nashville. “The only way to interrupt transmission is to have everyone wear some sort of face covering.”

如果您确实在戴脸部遮盖步行运动，任何具有较厚织物的布面膜都应该很好。沙夫纳说：“您不需要通常由医疗保健专业人员戴的面具。”“只要围巾或自制面具遮住鼻子和嘴巴，就会做。”

您可能会想知道是否应该在脸部覆盖面上套上套在散步上，并配上湿面料，以保持面膜干燥。这可能不是必需的。疾病预防控制中心recommendations for making face coverings包括使用棉布或T恤材料的说明，不要提及吸湿材料。沙夫纳说：“如果人们想尝试一下，那就去吧。”“重要的是要穿某种面部保护。”

每当您戴任何时间盖的脸部覆盖时，由于您的呼气是正常的，都会在面罩内部积聚一些水分。如果您快速行走，或从鼻分泌物中，如果您的鼻子流鼻涕。这是可以预料的，“大多数人，即使在医疗保健环境中，也可以在使用它们后将其面罩悬挂并干燥，” Schaffner说。“您可能还希望手头上有一个以上的口罩，以便您可以交替。”

疾病预防控制中心的建议无法直接解决人们在户外运动时是否应该穿脸部覆盖物；它仅指定人们在封闭式室内空间中与其他人接触时应该做什么。暂时，无论您是否选择在外面时选择戴脸部盖，都是由您自己酌情决定的。

与去超市，在狭窄的过道中保持六英尺的距离可能会更加困难，“人们通常不需要在附近行走并练习社会疏远的同时面部掩护，”朱迪思·莱特富特（Judith Lightfoot罗文大学在新泽西州斯特拉特福德的骨质疗法医学学院。

In rural and suburban neighborhoods where the foot traffic is light and people honor social-distancing guidelines, some people choose to walk without face coverings. You may feel comfortable doing this because you’re outside in fresh air, and you aren’t coming within six feet of anyone else in your travels. However, it can still be helpful as an extra precaution while practicing social distancing, especially in densely populated urban neighborhoods. If you’re more likely to encounter people on your walk, “I would recommend wearing a face covering since it can be difficult to adhere to social distancing in more populated areas,” says Lightfoot.

当您完成步行并准备好取下脸部盖, don’t touch the front of the mask (which may have germs on it) or your eyes, nose, or mouth (these are common ways for germs to enter your system). “When you take the mask off, you should immediately wash your hands, either with soap and warm water for 20 seconds or use an alcohol-based hand sanitizer,” says Schaffner.

It’s also important to wash your face covering periodically. How often you wash it depends on when, where and how often you’ve worn it. For example, if you’ve worn your face covering to the supermarket for an hour, where you encountered others in an enclosed space, you may want to remove it carefully and throw it right in the washing machine before wearing it again. If you’ve only worn it while taking anearly morning walk通过您的邻居，您一路上看不到其他任何人，在洗涤之前再次佩戴它可能还不错。沙夫纳补充说：“我建议每当弄脏时洗脸，”

如果您不确定是否使用脸部覆盖在户外运动, it may be better to err on the cautious side and wear one, while also practicing social distancing. “Regardless of if you live in a city, the suburbs or a rural area, my advice is to take a face covering with you every time you leave your house,” says Schaffner. “This advice is the same whether you are alone on a path or passing others on the sidewalk, even while maintaining a social distance of at least 6 feet apart. At this point in the pandemic, my inclination would be to wear a face mask more often than not.” However, note that a face mask is not a substitute for social distancing.