@amesrobb Also if you have insurance (or medicare/medicaid) you can get 8 free tests per month. That covers 90% of the population (10% uninsured). And some communities distribute free tests at community centers, by mail, etc. The USPS tests are not the only free tests.
@如果你有保险（或医疗保险/医疗补助），你每月可以得到8次免费检查。这涵盖了90%的人口（10%没有保险）。一些社区通过邮件等方式在社区中心分发免费测试。USPS测试并不是唯一的免费测试。