The nose swab PCR test for COVID-19 is an accurate and reliable test for diagnosing COVID-19. A positive test means you likely have COVID-19. A negative test means you probably did not have COVID-19 at the time of the test. Get tested if you have symptoms of COVID-19 or have been exposed to someone who tested positive for COVID-19. What …

根據天津市人民政府新聞辦公室官方微博消息，天津又一批進口乳清粉Covid-19拭子檢測呈陽性, 天津又一批進口乳清粉Covid-19拭子檢測呈陽性 中新社, 一月 22. 據天津市官方微博消息 …