B.C.'s top health officer says the H1N1 flu outbreak in the province could have been twice as bad if it weren't for anti-viral drugs.

Dr. Perry Kendall says the second wave of the disease has passed, with no one dying in the last week and a sharp decline in the number of overall cases, thanks in part to mass vaccinations.

But he also says without the early access to anti-viral drugs the province might have had double the rate of illness and death.

Since last April, B.C. has recorded 55 deaths from the H1N1 flu and just over a thousand severe cases of the illness.