The abolition of modern virology, roll the clock back on them a hundred years. Allow the development of vaccines for extant viruses, but completely ban all Dr Frankenstein activities with viruses. No more "invent a virus in a lab to beat nature to the punch" horse shit, with is flagrant weapons development under the cover of civilian research. As soon as the virus started circulating through the population, did these researchers share their knowledge and help develop a vaccine? No, they buried their involvement and covered up everything they knew. They were no help at all, and never intended to be. Burn their books which describe how it is done, and silence the people who already understand it with the threat of criminal imprisonment for sharing their knowledge. Encourage major religions to amend their rules with strong taboos against this research, and institute harsh economic sanctions against any nation that doesn't participate in this ban.
Does this seem extreme? It shouldn't. This field of research has the power to kill billions and no demonstrable upside. It is even more dangerous than nuclear weapons; because at least a technician at a nuclear weapon production facility would be hard pressed to release his work on the global public of his own initiative. Smuggling a virus out of any lab is trivial, all it takes is a single madman's willingness to sacrifice himself as patient zero.
We're the villagers in an "evil wizard" scenario. The wizards have been meddling in dangerous forces beyond the understanding of common people, and it's getting people killed. The solution is to storm the wizard's tower and throw the wizards off the top of it.