Influenza Outbreak 2024 Lexus. Typically, flu follows a seasonal pattern in southern hemisphere countries, with activity usually occurring between april. There are several types (namely a, b and c) and subtypes of the.

There are four types of influenza viruses—labelled a, b, c, and d—but the viruses that return every year and cause the most problems belong to the a and b groups. Learn more about the weekly influenza surveillance report (fluview) prepared by the influenza division.