Key points for Weeks 5 and 6 (January 31–February 13, 2011)

• The number of reported cases of carbon monoxide (CO) poisoning (n=52) is lower than that observed during the same period last year (n=83).

• No mass incidents in a public building were reported to the surveillance system during weeks 05 and 06.

• One accidental death was reported to the surveillance system. According to the information available at the time of the report, this death was linked to the malfunction of a gas heater.