In 1775, Washington deployed colonial soldiers who had survived smallpox to retake Boston during a city-wide epidemic.

Agencies will have to show a “direct causal link” to “manifest bodily harm,” not just an increased risk of disease.

In the 20th-century statistics wars, Bayesians were underdogs. Now their methods may help speed treatments to market.

The administration had cut crucial funding for mRNA-based therapies. The rest of the world might step in and benefit.

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