Just to go off on a little tangent before coming back to this, I think Wizard of Oz is a cultural milestone. It was one of the first major color motion pictures and, it was so popular, it became an annual staple on television before almost any other movie (which, for you young 'uns out there born after the VCR means it was a tradition to watch it over the holidays like Charlie Brown Christmas and Rudolph the Red-Nosed Reindeer). The movie adaptation also borrowed a lot from the current climate of the Great Depression as the Kansas backdrop.
Now, back on topic: VITAS killed off 25% of the population on the first go-round and 10% on the second. If VITAS had hit in 2009 (according to the SR timeline), we'd be reset to the population size of the early 80's (just under 5 billion). Add in some growth (because people will make babies, especially in dire times), and the 2nd VITAS in 2022 would probably knock the population to around 4½ billion. That's a lot of people dying, but (unfortunately) most of that would take place in "third world" conditions, so the big nations would get hit, but not as hard as the others. Which, I think, would lead to those "first world" countries increasing their bubble-gum/pop culture/happy-happy-joy-joy entertainment to offset the dire news from around the world.