[Coolidge]

Isn't this the plot of a Tom Clancy book?

[Rebelbase]

"Isn't this the plot of a Tom Clancy book?"

Exactly. "Rainbow Six". Pharmaceutical eco-terrorists infect people with an airborne communicable version of Ebola at the Olympics. When the worldwide outbreak occurs they offer a vaccine which has a sleeper version of the virus in it that activates in about 6 months, thus finishing off the rest of the population, except for the chosen few who get a real vaccine.