When Ebola hit west Africa in 2013 there was no vaccine, so scientists had to work quickly to produce one. Although there were experimental vaccines, they hadn't been tested on humans yet. This used up valuable time.
Now, a new initiative has been launched to pre-emptively produce, test and stockpile vaccines in advance of potential outbreaks. It sounds like an obvious plan, but it's a big change to connect early experimental work with testing in humans before a need is there.
I think this is a great idea to save lives and work more cooperatively to do good in the world.