​This report presents two indicators of the relative weekly number of cases of influenza (flu) seen in Jersey over the winter flu season 2019 to 2020:

• number of hospital patients with confirmed flu (confirmed by laboratory test)
• number of resident patients presenting to their GP with flu-like illness
  

Clinicians can use the numbers presenting with 'flu-like' symptoms, alongside cases of influenza confirmed amongst hospital patients to assess the extent of influenza on the Island.

The report also shows to what extent the season's flu vaccines were delivered in advance of the onset of winter flu.