The numbers and rosy picture here aren't quite as nice as other—more detailed—reporting in the Economist recently would lead us to believe.

In some sense I do appreciate the sophistication of Bill Gates' science communication here though as I suspect that far more Westerners are his audience and a much larger proportion of them are uninformed anti-vaxxers who might latch onto the idea of vaccine-derived polio cases as further evidence for their worldview of not vaccinating their own children and thereby increasing heath risk in the United States.

Sir Karam Bales ✊ 🇺🇦. (2022, January 29). 1/🧵Some questionable stats, studies and statements over past 6 week Examples and evaluation First of all its worth looking at the impact some studies and articles have had in recent months https://t.co/o83T5fJW2N [Tweet]. @karamballes. https://twitter.com/karamballes/status/1487240863835119617

Seth Trueger. (2021, August 4). Schrodinger’s antivaxx [Tweet]. @MDaware. https://twitter.com/MDaware/status/1422902639373729792

Johnston, M. (2021). What Lies Beneath: Tackling Vaccine Hesitancy. Emergency Medicine News, 43(10), 7. https://doi.org/10.1097/01.EEM.0000795760.41732.33