Canada faces deadly fentanyl overdose crisis

VANCOUVER: Sirens scream non-stop through the urban heart of Vancouver, as responders race toward drug addicts overdosing—and dying in such numbers that the city's morgues are full.

This wealthy Pacific coast city is the bleak epicenter of an opioid epidemic that has claimed thousands of lives in Canada, while next door in the United States, drug overdoses are now the leading cause of accidental death.