Second dose of Omicron-targeting COVID-19 vaccines authorized for older adults, patients with weakened immune system

Following FDA and CDC authorization, Hattiesburg Clinic is now offering a second dose of the updated, Bivalent COVID-19 vaccines for adults ages 65 and older and those with a weakened immune system. The updated COVID-19 vaccines by Pfizer-BioNTech and Moderna are designed to fight against circulating variants, like Omicron, and strengthen protection for high-risk groups.

For those 65 and older who received their first bivalent booster four (4) months ago are eligible for the second dose. For immunocompromised patients, or those with a weakened immune system, can get a second dose two (2) months after their last booster. Your doctor may also recommend additional doses at certain intervals.

Additionally, the new COVID-19 guidance has been simplified for everyone. For those who have not received any of the COVID vaccines now only require a single dose of the bivalent booster (as opposed to two doses of the monovalent vaccine). Monovalent COVID vaccines will no longer be recommended for use in the U.S.

It is recommended that everyone ages 6 years and older receive an updated, bivalent COVID-19 vaccine, regardless of whether they previously completed their (monovalent) primary series. Individuals ages 6 years and older who have already received an updated vaccine do not need to take any action unless they are 65 years or older or immunocompromised.

Vaccines are available at HealthWorks Immunization Clinic, a service of Hattiesburg Clinic and Forrest General Hospital.  Appointments can be booked through Iris, Hattiesburg Clinic’s patient portal, or by calling (601) 261-1620.

For more information on the bivalent COVID-19 vaccines and updated vaccine recommendations, visit or