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How can countries stretch COVID vaccine supplies? Scientists are divided over dosing strategies

Researchers worry that efforts to free up limited vaccine doses are driven by desperation rather than data.
  1. Heidi Ledford
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Amid skyrocketing coronavirus infections, some countries are attempting to stretch limited supplies of COVID-19 vaccines by reducing doses or changing vaccination schedules from those shown to be effective in clinical trials. But data are scarce on the impact of such measures, and scientists are split over whether they are worth the risks.

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Nature 589, 182 (2021)

doi: https://doi.org/10.1038/d41586-021-00001-6

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