last i checked CO2 is a good thing which plants thrive on . Acording to NOAA there is also only about .36% of CO2 in the make up of the atmosphere so it would have little to no impact whatsoever .
most people who die of the flu are considered to be the high risk population which are either too young or too old to be driving in the first place. Never mind if you think that would have anything to do with gas prices you are sadly mistaken. maybe if a couple 100K died it might but thats not likely to happen with the speed vacines are made . the economy doesent really give a rats who dies or how many it only cares about whats on the horizon. OPEC has a much larger impact on the price of gas than the amount of cars on the road