SARS-CoV-2 influenza A influenza B Nucleic Acid Combined

Corona Virus Disease 2019 (COVID-19) is caused by SARS-CoV-2 which belongs to β Coronavirus of the genus. COVID-19 is an acute respiratory infectious disease, and the crowd is generally susceptible. At present, the SARS-CoV-2 infected patients are the main source of infection, and the asymptomatic patients may also become a source of infection. Based on the current epidemiological investigation, the incubation period is 1-14 days, mostly 3-7 days. The main manifestations were fever, dry cough and fatigue. A few patients have symptoms such as nasal congestion, runny nose, sore throat, myalgia and diarrhea.

Influenza is an acute respiratory infection caused by influenza virus. It is highly infectious and spreads mainly through coughing and sneezing. It usually breaks out in spring and winter. There are three types of Influenza, Influenza A (IFV A), Influenza B (IFV B) and Influenza C (IFV C), both of them belong to the ortomyxovirus family. Influenza A and B, which are single-stranded, segmental RNA viruses, are the main causes of human diseases. Influenza A is an acute respiratory infectious disease, including H1N1, H3N2 and other subtypes, is easy to change. the global outbreak, "shift" refers to the mutation of influenza A, resulting in a new viral "subtype". Influenza B is divided into two lineages: Yamagata and Victoria. Influenza B have only antigenic drift, and they evade surveillance and elimination by the human immune system through mutation. But influenza B viruses evolve more slowly than human influenza A, which also cause respiratory infections and epidemics in humans.