Pharmacy Deserts Create Vaccine Deserts in 111+ Rural Counties

During the COVID-19 pandemic, pharmacies administered the majority of vaccinations in the United States -- but 111 rural counties, mostly between the Mississippi River and the Rocky Mountains, had no pharmacy capable of giving vaccines at all. These same communities had no alternative immunization infrastructure: no health department clinic with vaccine storage, no hospital outpatient pharmacy, no mobile vaccination unit with regular routes. The result was a vaccination coverage gap of nearly 7 percentage points between rural counties (38.9%) and urban counties (45.7%) for COVID-19 vaccines. This is not just a COVID-19 problem. Pharmacies have become the primary immunization site for routine vaccinations including flu, shingles, pneumonia, RSV, and childhood boosters. The PREP Act expanded pharmacists' authority to administer vaccines precisely because pharmacies are more accessible than doctor's offices for most Americans. But this public health strategy assumed ubiquitous pharmacy access. In pharmacy deserts, the entire immunization infrastructure collapses because it was built on a retail pharmacy foundation that no longer exists in those communities. The public health consequences extend beyond the unvaccinated individuals themselves. Immunization rates below herd immunity thresholds in pharmacy desert communities create reservoirs for infectious disease that can seed outbreaks in surrounding areas. Measles, pertussis, and influenza do not respect county boundaries. A pharmacy desert in one county becomes a public health risk for the entire region. This problem persists because the United States delegated a core public health function -- population-level immunization -- to private-sector retail infrastructure without guaranteeing that infrastructure's permanence. Unlike the UK's National Health Service, which operates vaccination clinics as a government function, the US depends on pharmacies whose existence is determined by market forces. When the market withdraws, the public health function disappears with it, and no government entity has the standing infrastructure to step in quickly. Rebuilding public immunization capacity in 111+ counties would require sustained funding and political will that has not materialized.