We have no idea what’s going to happen.”It’s why health experts are urging Manitobans to roll up their sleeves and get the flu shot this year.“This year, any extra protection that we can afford that will limit the amount of pressure we put on a health care system is going to be crucial for us,” he said.By the end of last flu season, just over 26 per cent of Manitobans got the vaccine, which was a record year.Normally only around 19 per cent of Manitobans get vaccinated.The province told Global News it has ordered enough flu vaccine to immunize 40 per cent of the population.“Additional vaccine may be available to purchase if required.