The recommended timing of flu vaccination has not changed. September and October are the best times for most people to get vaccinated. Flu vaccination in July and August is not recommended for most people, but there are several considerations regarding vaccination in July and August for specific groups of people:
AccelHealth will begin flu vaccinations starting Oct. 1st. This timing is determined to be the most effective for most people, to ensure the efficacy is maintained throughout the flu season.
Ref. CDC, https://www.cdc.gov/flu/spotlights/2022-2023/flu-vaccination-recommendations-adopted.htm