Description
In December 2019, a virus A new one called (SARS-COV-2) was reported in Wuhan (China) and shortly after it led to the epidemic of the Covid-19 disease. Unfortunately, almost 2 years after the epidemic, there is still no effective medicine or vaccine with 100% efficiency. Currently, compliance with preventive protocols and timely diagnosis are the main things in controlling the virus. Following the sequencing of the virus genome, diagnosis based on real time PCR was rapidly developed, but this method requires dedicated laboratory facilities and trained personnel. Of course, it should be noted that in this method, special attention should be paid to false negative cases. Of course, the results can depend on the place and time of sampling. For example, the false negative rate is higher in the early stages of infection.