Delta Variant’s Spread And Why Minnesota Is Avoiding The Surge So Far CBS Minnesota 6 hrs ago Syndicated Local – WCCO | CBS Minnesota MINNESOTA (WCCO) – The Delta variant is now the most common strain of COVID in the United States. Some states, like Missouri, are seeing huge surges of the variant, which is overwhelming hospitals. However, Minnesota has curved the surge so far, but doctors warn we still need to stay cautious. “In the last two weeks, [the United States] increased to 20,000 cases a day to over 40,000 cases a day and that’s all due to the delta variant,” said Dr. Frank Rhame, the lead infectious disease physician at Abbott Northwestern.