Skip to main content
You are the owner of this article.
You have permission to edit this article.
top story

Mayo getting Johnson and Johnson doses, patients unable to choose which vaccine version they receive

  • Updated
  • 0

Mayo Clinic Health System will now administer the Johnson & Johnson COVID-19 vaccine in addition to the version from Pfizer, but patients will not be able to choose their vaccine incarnation due to indeterminant supply.

Dr. Erin Morcomb

Dr. Erin Morcomb

While both Pfizer and Moderna produce two dose vaccines, J&J is a one-shot formula. As health care facilities do not know in advance how many doses they will get of each, or in total overall, patients are not able to select which they recieve.

Mayo has received Moderna in the past, but next week will have Pfizer and J&J, with around 1,700 doses of the former and 1,000 doses of the latter available.

“We’re really at the mercy of the state and federal government for which vaccine we’re going to get, so we’re not able to divvy out a certain brand to people because we don’t know how much we’re going to get,” says Dr. Erin Morcombe of Mayo.

All versions, Mayo reminds community members, are proven safe and effective in helping prevent severe illness, hospitalizations and death from the coronavirus.

While J&J has an efficacy rate of around 72% vs. the 94-95% of Pfizer and Moderna, Morcombe says the rate is still impressive.

The J&J vaccine’s efficacy rises to 85% in preventing severe COVID infection, and no trial participants were hospitalized or died from COVID-19 during the 28-day follow up period post vaccination.

The J&J version has also proven effective against COVID-19 variants originating in South Africa and Brazil — Moderna and Pfizer trials were conducted before these variants emerged.

“This is another really big plus” for the J&J vaccine, Morcombe says.

Side effects of the J&J vaccine mirror those of the Pfizer and Moderna versions — fever, pain at the site of injection, headache, fatigue — but were less commonly experienced than by those who had the two-dose vaccines.

Midwestern states are preparing to scale up their distribution of the COVID-19 vaccine as quickly as possible, to as many people as possible, now that the vaccine supply provided through the federal government seems assured.

“People don’t need to be choosy about which brand they are getting, because they are all very effective and the goal is to get as many people vaccinated as possible so we can get over the pandemic,” Morcombe says.

Mayo has experienced patients delaying in making appointments, and urges people to schedule their shots in advance. Patients can self-schedule via their Patient Online Services account by clicking appointments, selecting the “new appointment” tab, and going to “COVID-19 vaccination.”

Patients may also make an appointment through the Mayo Clinic App or call 608-392-7400.

Mayo administers the COVID-19 vaccine at its locations in La Crosse, Arcadia, Sparta and Prairie du Chien. Patients are encouraged to get the vaccine wherever they are able, including alternative locations such as Walgreens or the Community Vaccine Clinic at UW-La Crosse. For more information on registering for vaccination at local sites, visit or call 844-684-1064

Emily Pyrek can be reached at


Concerned about COVID-19?

* I understand and agree that registration on or use of this site constitutes agreement to its user agreement and privacy policy.

Related to this story

Get up-to-the-minute news sent straight to your device.


News Alerts

Breaking News