As of January 4, 2022:

The U.S. Centers for Disease Control and Prevention (CDC) recommended that Pfizer recipients who have completed their initial  COVID-19 vaccine series can get a booster shot at five months instead of six months, expanding protection against COVID-19 to more people sooner. The CDC also recommended that moderately or severely immunocompromised children ages 5 to 11 be able to receive a third dose 28 days after their second shot, which will help strengthen protections for this vulnerable population.  Eligibility for these groups is effective immediately. The Pfizer vaccine is authorized for boosters in individuals ages 16 and up and is currently the only vaccine authorized and recommended for children ages 5-11.  Please visit this link for the full article posted on the NJDOH Website.