ST. PAUL — Minnesota reported 7,133 new coronavirus cases Tuesday, Oct. 5, the largest single-day tally of the year, but health officials said it was likely an undercount of new infections.

The new cases were diagnosed over the weekend and a technical delay resulted in not all newly identified infections being reported to the state Department of Health. The remaining cases will be included in Wednesday’s data report.

The state now releases new pandemic data on each business day and the data released Tuesday is through 4 a.m. Monday. Despite, health officials using a staggered reporting schedule since summer, Tuesday’s total is the largest of the year.

The latest cases were the result of nearly 105,000 coronavirus tests, also a daily high for 2021.

Another 12 COVID-19 deaths were also reported Tuesday. They ranged in age from their 50s to their 90s with nine residing in private homes and three in long-term care.

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All 12 fatalities occurred in September, bringing the pandemic death toll to 8,203 with 4,648 fatalities in long-term care facilities. Another 113 deaths are suspected to have been caused by COVID-19, but the person never had a positive coronavirus test.

Hospitalizations also jumped over the weekend. There are 847 patients hospitalized including 220 in critical condition, up from 821 patients requiring care on Friday.

The rate of positive tests, new cases and hospitalizations all remain well above the caution thresholds health officials use to determine whether the pandemic is under control. Nearly all new cases are caused by the more contagious delta variant.

Health officials maintain that vaccines are the best way to avoid a severe case. Breakthrough infections have become more common, but about 99% of the 3.1 million residents who are fully vaccinated have not reported a breakthrough case.

Minnesota has administered 6.5 million doses of coronavirus vaccine and 3.4 million have gotten at least one dose. About 72% of eligible Minnesotans, those 12 and older, have gotten at least one shot.