The current number of influenza cases in the Southern Hemisphere is substantially higher than normal. For example, in Australia the number of influenza cases this year are twice the next highest year. 
Have you gotten your flu shot yet?
http://www.health.gov.au/internet/main/publishing.nsf/Content/cda-surveil-ozflu-flucurr.htm/$File/ozflu-surveil-no09-2017.pdf
