Complex sentence: Death from fentanyl overdose was declared a public health crisis in Canada in September 2015, and it continues to be a significant public health issue: in 2016, deaths from fatal fentanyl overdoses in British Columbia, Canada, averaged two persons per day.
Split into simpler sentences: Death from fentanyl overdose was declared a public health crisis in Canada in September 2015, and it continues to be a significant public health issue. In 2016, deaths from fatal fentanyl overdoses in British Columbia, Canada, averaged two persons per day.