Stomach Flu 2024 Canada. Norovirus is a highly contagious infection also known as norwalk virus. Cases of the flu are down in waterloo region, but the medical officer of health says public health is seeing an uptick in gastrointestinal illnesses in child care.
Less common symptoms include fever, headaches, and body aches. It affects people of all ages, but it causes severe acute gastroenteritis in children.