A positive environmental test is currently common in neocoronavirus environmental surveillance and refers to the detection of the presence of the virus in the tested area, but there is no way to tell if it is contagious.
A positive environmental test in the medical clinic generally means that a doctor has detected the presence of a fragment of viral RNA in a random test of a specific area, which is currently common in new coronavirus testing. The main testing area for this test is the place where the virus infected person or asymptomatic infected person lives, works, routes, stays, etc., indicating that there is a possibility of transmission of the virus in that area. However, since the sample is not a complete virus, it is not possible to determine whether the environment is infectious.
An area with a positive environmental test indicates that viral transmission has occurred, but since the survival time of the virus is affected by factors such as environmental temperature, the virus may have lost its activity and infectiousness by the time the test result is positive.
However, environmental monitoring is still clinically important, as a positive result not only alerts the surrounding population to avoid traveling to the area, but also prevents the virus from spreading by isolating and testing for nucleic acid in people who have a record of staying in the area.
If normal people find themselves in an area with a positive environmental test, they should report it to the community and health department and cooperate with the quarantine.