Kupuna who received COVID-19 vaccines and boosters in a timely matter should have received two monovalent boosters and one bivalent booster. However, kupuna who did not get their vaccines in a timely matter may have received fewer boosters. All kupuna who have completed their primary series should receive a bivalent booster at least two months after their most recent vaccination/booster.
Some kupuna with compromised immune systems have received a total of six doses, two primary doses, one additional dose, two monovalent boosters, and one bivalent booster.
Source: https://www.cdc.gov/vaccines/covid-19/clinical-considerations/interim-considerations-us.html (CDC)