Outbreak Outlook - April 7

Respiratory Diseases

Influenza-like illness

Outpatient influenza-like illness (ILI) declined slightly to 3.2%, down from 3.3% the week prior. We are still hovering above the 3% threshold that marks the end of flu season.

Flu B is making itself known. Nearly half of the tens of thousands of specimens tested during the week ending March 29th were positive for flu B, according to the clinical laboratories¹. At the public health laboratories, the proportion was lower (11.4%) but still shows an increasing presence. If you develop a fever and cough or sore throat, there's a good chance it's flu B.