Recently, a local case of the new crown emerged in Chengdu's Pidu District. In addition to the patient's partner, 11 of the 126 samples that have been tested in the environment and food samples such as door handles, switches, food in the refrigerator, and cutting boards in their homes were positive. This new coronavirus is so tenacious on items and foods other than people, is it necessary to use sample preservation solutions for in vitro preservation of virus samples?
First of all, after sampling the new coronavirus sample in nucleic acid testing, if it cannot be tested in time and needs to be transported or stored for a short time, the virus sample preservation solution must be used. Some people may think that the new coronavirus is different from other viruses. It is much more tenacious outside the body, and there is no need to use a virus preservation solution to store virus samples, but this is not the case.
Terrible and tenacious virus
Indeed, since the epidemic, the new crown has not only tested positive in humans and a few animals, but also tested positive in food, especially cold chain fresh food, and even frequent contact with product packaging, elevators, door handles, switches, etc. Some of the objects also tested positive. From this point of view, the virus is indeed very tenacious. This also highlights the complexity and severity of the epidemic prevention and control work, and the arduous nature of the prevention and control task, which has sounded the alarm bell for epidemic prevention and control.
However, it should be noted that although the virus is indeed detected on the object, and the positive rate of incomplete statistics is still close to one-tenth, it means that the virus can remain on the surface of the object for a certain period of time. Although there may be few remaining viruses and the retention time may not be long, there is still a relatively high risk of infection if people have frequent contact for a long time.
However, it is different for nucleic acid detection. The detection requires that the results are completely accurate. If the virus sample in the sampling tube is not added with preservation solution, there is a high probability that virus nucleic acid degradation will occur during transportation and storage. , Let alone one-tenth even if it can survive 99% in the sampling tube, even one may cause degradation and lead to false negatives.
When the sample in the virus sampling tube needs to be transported and stored, it is not only necessary to add a sample preservation solution. In order to meet the requirements of different detection conditions, Desheng also provides two types of virus transport media, inactivated and non-inactivated. Everyone must take protective measures on frequently touched objects.
Contact Person: Miss. Ankiwang