Stomach Flu 2024 Canada News.  — national flu activity has steadily decreased over the past few weeks, according to the latest data from the public health agency of canada’s (phac) flu. Norovirus is a highly contagious infection also known as norwalk virus.

 — the very contagious norovirus that is known for causing inflammation of the stomach and intestines is rising across the country — but it is not uncommon during this time of the year, according to. Norovirus is a highly contagious virus that usually causes vomiting and diarrhea.