Recently, according to media reports, the Illinois Department of Public Health virus laboratory explained the detection process of new coronavirus, and noted that the detection appears
Virus Lab Director Jennifer
Crewe said,At present, the detection method we use is polymerase chain reaction (PCR), we put samples in special instruments to detect specific sequences in virus chromosomes. If the specific sequence is detected, there will be an enlarged curve in the detection result. Therefore, if there is no sign in the report, it is negative; otherwise, it is positive.
In some cases, says Mr Crewe, the results appear The patient may have just been infected or the infection is about to end when there aren't enough viruses in the body for testing 。