H3N2 flu disease. many major places in all around the world are having a sudden increase in the number of patients infected with the Influenza Virus Subtype H3N2. Patients are showing all H3N2 Symptoms like fever, cough, fatigue, headache, muscle aches, sore throat, and nasal congestion. This virus is famous as one of the fastest-spreading viruses and makes a lot of people very ill. It has already caused many seasonal flu outbreaks in 2023. In this article, we will discuss all the severe consequences and symptoms of the H3N2 virus Etiological agent-The virus There are four types of influenza viruses: A, B, C, and D. Influenza A and B viruses cause seasonal epidemics of disease in people (known as flu season) almost every winter. Influenza A viruses are the only influenza viruses known to cause flu pandemics (i.e., global epidemics of flu disease). A pandemic can occur when a new and different influenza A virus emerges that infects people, has the ability to spread efficiently among ...