Health officials are warning this year's flu season could be one of our worst, and the push is on to get vaccinated. There has been a sharp rise in Influenza B strains which haven't been widely circulating since 2019 and reports that flu cases have more than doubled in recent weeks. Influenza can be deadly, especially for some of our most vulnerable, and there are real concerns our immunity is low after Covid. Hospitals are getting prepared for the winter period with Te Whatu Ora Health New Zealand announcing their winter plan in the next week. Te Whatu Ora's interim national medical director Dr Pete Watson, joins Sunday Morning to discuss the current strain of influenza, how it is different to Covid, and how we can better prepare.