Moderna and J&J COVID-19 booster shots now available on Guam

Vials of Johnson & Johnson's Janssen coronavirus disease vaccine are seen in an undated photograph. (J&J photo)

Effective immediately, Moderna and Johnson and Johnson/Janssen COVID-19 booster shots are available on Guam to those who meet the eligibility criteria. This follows U.S. Food and Drug Administration (FDA) authorization and U.S. Centers for Disease Control and Prevention (CDC) recommendations.

For individuals who received a Pfizer-BioNTech or Moderna COVID-19 vaccine (first two doses), the following groups are eligible for a booster shot at 6 months or more after their initial series:

  • Anyone age 65 years and older

  • Anyone age 18 years and older with underlying medical conditions

  • Anyone 18 years and older with an elevated risk of COVID-19 exposure and transmission due to their occupation (e.g. healthcare workers, law enforcement, fire, K-12 teachers and support staff, university faculty, daycare employees, food and agriculture workers, manufacturing workers, USPS workers, corrections workers, public transit workers, grocery store workers) or institutional settings.

For individuals who received the Johnson and Johnson/Janssen COVID-19 vaccine, booster shots are also recommended for those who are 18 and older and who were vaccinated two or more months ago.

There are now booster recommendations for all three available COVID-19 vaccines in the United States.

Eligible individuals may choose which vaccine they receive as a booster dose. The eligible population(s) and dosing interval for the mix and match booster dose are the same as those authorized for a booster dose of the vaccine used for the primary series.

Some people may have a preference for the vaccine type that they originally received, and others may prefer to get a different booster.

CDC’s recommendations now allow for this type of mix and match dosing for booster shots. Only single booster doses are authorized at this time.


8:30AM – 1:30PM (for 65 and older)

Pfizer-BioNTech, Moderna, Johnson & Johnson

For appointments, register at or call your village mayor.




October 25 – 26

November 16


Dededo Senior Center

October 27

Piti/Asan Maina

Asan Maina Mayor’s Office

November 1


Yigo Gym

November 8 – 10

Mangilao/Barrigada/Chalan Pago-Ordot/MTM/Yona

UOG Field House

November 15


Astumbo Senior Center

November 18


Tamuning Senior Center



Pfizer-BioNTech, Moderna, Johnson & Johnson

Everyday EXCEPT

Thursdays and Sundays:

11 a.m. – 5 p.m.

University of Guam Field House, Mangilao

Register at

Walk-ins are welcome, but appointments will expedite. Please bring appointment confirmation and proof of identity. Last appointment is at 4:30 p.m.

Thursday – Saturday:

11 a.m. – 4 p.m.

Micronesia Mall, 2nd Floor, Above Center Court, Dededo

Register at

Walk-ins are welcome, but appointments will expedite. Please bring appointment confirmation and proof of identity. Last appointment is at 3:30 p.m.

Every Monday: 9 a.m. – 12 p.m.

Every Friday: 1 p.m. – 4 p.m.

DPHSS Northern Region Community Health Center, Dededo

Call (671) 635-4418/7400 to schedule an appointment. Walk-ins welcome.

Every Tuesday and Wednesday:

9 a.m. – 12 p.m.

DPHSS Southern Region Community Health Center, Inalåhan

Call (671) 828-7604/5/7518 to schedule an appointment. Walk-ins welcome.


(JIC Release No. 830)