There are four different strains of influenza, classified as type A, type B, type C, and type D. Influenza types A and B are the most common strains, as they are responsible for seasonal influenza epidemics nearly every winter in the United States, commonly referred to as flu season from late October to early March. Additionally, influenza A viruses are the only type of influenza known to cause pandemics, which is an epidemic on a global scale. In contrast, influenza type C viruses are generally mild and are not believed to cause epidemics, while influenza type D viruses primarily infect cattle and not humans. For more information about influenza testing or an appointment with us at Franklin Primary Care, we would love to hear from you! Please call us, schedule an appointment with us right here on our website, or visit our clinic at 225 Nassau Blvd West Hempstead, New York, for a walk-in appointment. We serve patients from West Hempstead NY, Franklin Square NY, Garden City NY, New Hyde Park NY, Uniondale NY, Mineola NY, and North Valley Stream NY.