Vaccines aren't yet widely available, but as supply increases, communities must do better tracking and publishing Covid vaccination data. Our new report outlines six key indicators to track. https://t.co/6UCgIc02A6

Which places have done the best job of protecting people from Covid? A thread.

Best at early action: TAIWAN. Quickly halted flights, quarantined travelers, implemented widespread testing, and quadrupled face mask production within a month. The US now has more cases and deaths every 5 minutes than Taiwan has had to date.

Best at learning from recent epidemics: LIBERIA. Hit hard by Ebola in 2014, Liberia was one of the first countries to screen for Covid at airports and implement comprehensive control measures, including rapid testing, complete contact tracing, and effective quarantine.

Best at crushing the curve: NEW ZEALAND, which began preparing hospitals and border control policies in February, then implemented a countrywide lockdown in late March with the goal of eliminating Covid entirely. Clear, empathetic communication has been essential.

Best location in the US: AMERICAN SAMOA. On high alert after a 2019 measles outbreak, health authorities halted all incoming passenger flights and have managed to prevent any Covid cases.