[saurik]

FWIW, in the United States, it isn't clear we are ever going to herd immunity... like we are at the point where the New York Times is just reporting on the idea that we've lost that battle. So I can feel sympathy for the strategy of getting our essential workers and old people--at lease the ones willing to take a vaccine--double-doses before moving on to people who are less likely do die from the disease.