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Published on October 26, 2021

Moderna and Johnson & Johnson COVID-19 vaccine boosters will be available Oct. 27

Gundersen Health System will provide boosters of the Moderna and Johnson & Johnson (J&J) COVID-19 vaccine to newly eligible groups starting Oct. 27, 2021, at all locations that provide the vaccines.

In addition, patients and non-patients who already received the COVID-19 vaccine at Gundersen can safely receive their booster from a different manufacturer, based on guidance from federal health experts. Gundersen welcomes those who were vaccinated at another location, although proof of vaccination is required for a booster.

WHO: Gundersen will provide vaccine boosters to the following groups:

For the Moderna COVID-19 vaccine (at least 6 months after a second dose):

  • Anyone age 65 and older
  • People age 18 through 64 with certain medical conditions that put them at high risk of severe illness from COVID-19. The CDC outlines those medical conditions here.
  • People age 18 through 64 with high risk of COVID-19 exposure at work or in congregate care or living settings. This could include, but are not limited to, frontline healthcare workers, educators, daycare providers, those experiencing homelessness who are living in a shelter and long-term care facility residents.

Note: Pfizer COVID-19 vaccine third doses are available to the same groups as the Moderna COVID-19 vaccine.

For the J&J COVID-19 vaccine (at least 2 months after a first dose):

  • Anyone age 18 and older who received single dose of J&J COVID-19 vaccine, regardless of health risk factors, occupation or living situation.


  • 8 a.m. to 6 p.m. Monday through Thursday and 8 a.m. to 4:30 p.m. Friday at Gundersen Onalaska Clinic (Level 4) and Gundersen La Crosse Clinic (Level 1 near the healing garden).
  • Moderna, J&J and Pfizer vaccines are available at other Gundersen COVID-19 vaccination locations.

HOW TO SCHEDULE: Appointments are preferred, although walk-ins are accepted. Please schedule using MyChart or by calling (608) 775-6829.

what to expect

We've taken steps at all our locations to keep you and our staff healthy and safe. Here's what to expect when you visit us.

Stay safe