The Polio vaccine was introduced in the US in 1955, the measles vaccine in 1963. The impact was dramatic. That is what we are hoping for in 2020, or 2021 or ASAP. @OurWorldInData
ourworldindata.org/microbes-battl… https://t.co/kzvaibe9iU
RT @gonglei89: Popping real estate and stabilizing its downfall is really only one step in a broader transition sequence. What
RT @gonglei89: Popping real estate and stabilizing its downfall is really only one step in a broader transition sequence. What people shoul…