If you're noticing people around you sniffling, coughing or sneezing, it could well be the flu. Public health data show that flu cases make up almost a quarter of all respiratory viruses circulating in Canada. Infectious diseases specialist Dr. Zain Chagla explains why cases are so high right now, and why you should consider getting a flu shot if you haven't already.For transcripts of The Dose, please visit: lnk.to/dose-transcripts. Transcripts of each episode will be made available by the next workday. For more episodes of this podcast, click this link.