Apparently the swine flu in Mexico City caused few real deaths but many traffic deaths. The large drop in the volume of cars increased velocities and also increased traffic fatalities. There were 12 traffic fatalities in the 6 days before the government issued their swine flu alert and 75 traffic fatalities in the 6 days after.
Here is the kicker: the increase in traffic deaths (63) dwarfs the number of swine flu deaths (8) during those six days.
Thought that might be of interest.
ITDP, Mexico City
SOURCE: See Comment below