• Admin

Moderna, Janssen booster shots now available; CDC OKs vaccine mixing





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 six 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.




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