fast mutating and highly diverse strain of flu
http://www.news.com.au/national/breaking-news/experts-to-scrutinise-the-2017-flu-vaccine/news-story/013a11f21f76e3136f42bd1394d1a791
Why would I get a flu shot that won't work against the worst strain of flu? Better to stay out of places where flu spreads, if possible.
Our friends in OZ both have had it and it is really bad. He cracked a rib from coughing...