Minnesota ranks second among states with 31% of vaccinated adults receiving COVID-19 booster doses, but health officials said more such shots are needed amid a lingering pandemic wave and the threat of a new viral variant.
The omicron variant found in South Africa might reach Minnesota some day, but waning immunity and the fast-spreading delta variant present risks right now for people who are unvaccinated or due for boosters, said Michael Osterholm of the University of Minnesota's Center for Infectious Disease Research and Policy.
"Every day they haven't gotten a booster they are becoming more susceptible to infection," he said.
State Health Commissioner Jan Malcolm advised people to get vaccinated, wear masks in crowds and seek testing if they experience symptoms or viral exposure. None of Minnesota's 9,382 COVID-19 deaths and 899,739 coronavirus infections has been traced to the omicron variant, but Malcolm said the state's surveillance system is looking for it through genomic sequencing of positive specimens.
"If an omicron variant infection is found in Minnesota, we will share that information as soon as possible," she said.
Another 44 COVID-19 deaths and 4,450 coronavirus infections were reported Monday in Minnesota, which has the highest seven-day rate of new infections among U.S. states. COVID-19 hospitalizations increased in Minnesota to a 2021 record of 1,467 on Friday, and included 340 people receiving intensive care.
The state is caught in a double-whammy of high infection rates among the unvaccinated and rising infection rates among the earliest COVID-19 vaccine recipients.
Immunity appears to wane six months after vaccination or prior infection, increasing the risks for elderly Minnesotans and people with underlying health problems who were prioritized for initial doses last winter.