Influenza H3N2 is an influenza A virus subtype that is responsible for seasonal outbreaks of flu around the world. It is sometimes referred to as the “Hong Kong Flu” because it was first identified in 1968 during an outbreak in Hong Kong. H3N2 is one of the most common strains of influenza and is characterized by its rapid spread, severe symptoms, and frequent mutations.
Infection with H3N2 is typically spread through contact with an infected person’s respiratory droplets. It can also be spread through contact with contaminated objects such as door handles or toys. Symptoms of H3N2 infection can include fever, chills, muscle aches, coughing, and sore throat. Some people may also experience fatigue, headaches, and loss of appetite. In more severe cases, H3N2 can lead to pneumonia, bronchitis, and other respiratory infections.
H3N2 is a highly contagious virus and it is estimated that up to 20% of the population is infected each year. It is also one of the most common causes of hospitalization and death due to influenza around the world. Vaccines are available to protect against H3N2, but the virus is constantly mutating so the vaccine must be updated regularly to remain effective.
Overall, H3N2 is a serious virus that can cause severe illness and even death. Vaccines are available to protect against it, but it is important to get vaccinated every year to stay protected.