As New Hampshire fine tunes its blueprint for distributing a coronavirus vaccine, once it becomes available, the state is planning to set up its first immunization registry to track how many people have received the drug.

New Hampshire has a system to track vaccine purchases, but currently doesn’t keep statewide records of patients who have been immunized. Health officials say that makes it harder to track immunization rates in the state, which will be required of states as part of a federal rollout of a COVID-19 vaccine.