We have to remember that Humanity witness the destruction of the United Kingdom and the majority of Europe in the spam of a year.You would hope so but with humans like Putin and his supporters in the world you cant count it out for sure.
Everyone is terrified of the possibility that Terrorist could obtain samples of the Rage Virus and spread it on to Asia and America.
Remember this is 2002, the September 11th attacks has only JUST happened a year ago when the Outbreak started in Cambridge.
The OTL War on Terror has only begun and now just gotten significantly worse as everyone will be frightened and scared of the worse case scenario of Rage being spread across the world.
A new Cold War is the last thing that Americans will want with the threat that terrorism can impose onto the wider world, what is likely to happen is the sides agree to work together to curtail the chances that organisations like Al-Qaeda under the leadership of Osama Bin Laden or rogue states like North Korea under Kim Jong-il could ever get their hands on the Rage Virus and weaponise it.
That is why everyone was vaccinated to prevent the chances of the Rage Virus from ever resurfacing on the planet.
Posters like this would likely emerge during the ATL version on the war on Terror.