The culture of normal human pharyngeal isthmus should have normal oral flora without pathogenic bacteria. The bacteria in the pharynx come from the outside and are not pathogenic under normal circumstances, but they can cause diseases due to the decline of systemic or local resistance and other external factors.

Alat antigen: Modena said that the probability of occurrence of more dangerous variants is about 20%The latest data from the WHO website shows that as of 18:58 CET on the 24th (1:58 Beijing time on the 25th), the number of confirmed cases worldwide increased by 1,690,016.

Influenza A/B Antigen Rapid Test: Omicron has three characteristics. Academician Zhang Boli said in an interview with the media that it is inappropriate for "Omicron" to be equal to "big flu". The sequelae of new coronary pneumonia are still relatively many, much higher than influenza.

COVID-19 Antigen Rapid Test: scientists repurpose FDA-approved drug to fight all COVID-19 variants. Several FDA-approved drugs -- including those for type 2 diabetes, hepatitis C and HIV -- significantly reduce SARS, according to a new study led by scientists at Penn State University.

Total antibodies rapid test: Omicron's crisis. The TAG-VE was convened on 26 November 2021 to assess the SARS-CoV-2 variant: B.1.1.529.