cbc.ca / .cbc-ca-health

The source of a diarrhea-causing parasite that has been plaguing Americans across multiple states for weeks has been found, so now what?

Federal health officials have identified lettuce from Mexico served by Taco Bell locations across five U.S. states as a source of the widespread outbreak of diarrhea-causing parasite cyclospora.

The CFIA says the seasoning should not be used, sold or served due to possible contamination from Bacillus cereus, a bacteria that can cause food poisoning.

Despite improvements overnight with the smoke, an orange-level air quality warning by Environment Canada remains in place Friday across most of the Greater Toronto Area.

Taco Bell said on Thursday it had removed lettuce from one of its suppliers in some U.S. states, after reports said investigators linked the ingredient to an ongoing cyclosporiasis outbreak that has sickened thousands of people in the country.

Health officials in Alberta are investigating an uptick in cyclosporiasis, a parasitic illness that can cause severe diarrhea and is responsible for a large outbreak in the United States.

Uganda discharged its last remaining Ebola patient on Thursday.

WHO chief Tedros Adhanom Ghebreyesus and colleagues are expected to take questions Thursday about the growing Ebola outbreak in the Democratic Republic of Congo.

The United States took one step closer to abandoning the practice of changing the clocks every spring and fall, raising the question: how would such a move down south impact Canada?

A new national report finds that 4.5 million Canadians who are middle aged and older have had trouble accessing specialist care -- a problem that could only get worse as the country's population ages.