On Thursday, the Centers for Disease Control and Prevention announced the release of more than 77,000 additional doses of a vaccine to protect infants against RSV.

The virus the leading cause of infant hospitalization, especially for children under 3 months.

State health department officials say they’ve received word that additional doses would be made available to states with more than 5% Native American births. But they haven’t yet heard whether Arizona will see any.

The CDC and FDA are encouraging doctors to prioritize using the limited supply to vaccinate high-risk infants amid the ongoing shortage.

More stories from KJZZ

• Arizona vaccine rates for COVID-19, flu lag as holidays approach
• COVID expert: Return to normal against 3 respiratory viruses 'not going to go well'