ALT US COVID-19 heat map dated October 26, 2026, from the Pandemic Mitigation Collaborative (PMC), based on CDC wastewater data updated October 17. - Very Low (pale green): Under 0.9% estimated infectious. - Low (green): 1.2% (0.9–1.5%). - Moderate (orange): 2.0% (1.5–2.4%). - High (red): 2.9% (2.4–3.5%). - Very High (purple): Above 3.5%. - Geographic trends: Widespread high and very high activity across the West, South and parts of the East, with lower levels across portions of the Midwest. - Outbreaks: At least 44 states and territories affected, unchanged from last week. - National trend: A secondary wave peak is reported, with large upward retrospective CDC data corrections. - Data limitations: Poor wastewater monitoring may conceal additional outbreaks. Map distinguishes observed and estimated county-level data.

ALT National COVID-19 Estimates (U.S.), October 26, 2026, from the Pandemic Mitigation Collaborative (PMC) model at pmc19.com. The table presents estimated infections, Long COVID cases and excess deaths. - Actively infectious: 1 in 60 Americans (1.7%). - New daily infections: 822,000. - Past week's infections: 5,890,000. - Infections in 2026: 160 million. - Cumulative infections per person: 5.64. - Long COVID from daily infections: 41,000–164,000 estimated cases. - Long COVID from weekly infections: 295,000–1,180,000 estimated cases. - Excess deaths from daily infections: 200–350 estimated. - Excess deaths from weekly infections: 1,400–2,500 estimated. All figures are model-based estimates, not confirmed case counts.

ALT PMC COVID-19 State Prevalence Estimates, October 26, 2026. Table showing estimated active infections across 25 US states and territories, CDC wastewater levels and infection probabilities. - Highest prevalence: Florida 6.1% (1 in 16), Hawaii 5.1%, Connecticut 4.5%, Guam 4.3%, California 3.9%. - High prevalence: Maryland 3.5%, Delaware and Idaho 3.2%, Arkansas 2.9%, Mississippi 2.8%, Arizona 2.5%, Massachusetts 2.4%. - Moderate: Colorado 1.8%; Alabama, Illinois and Kansas 1.6%; DC and Maine 1.4%; Georgia 1.3%; Louisiana 1.2%. - Lowest: Michigan 0.9%, Minnesota 0.8%, Alaska 0.7%. - Exposure risk: In a room of 10, estimated probability ranges from 7% in Alaska to 47% in Florida; Florida exceeds 99% in a room of 100. - Notes: Red shading highlights higher prevalence. CDC categories were revised downward in August 2026. Data updated October 17; some reporting is limited.

ALT PMC COVID-19 State Prevalence Estimates, October 26, 2026. Table showing estimated active infections, CDC wastewater levels and exposure probabilities across 27 US states and territories. - Highest prevalence: Oregon and Washington 6.7% (1 in 15), Puerto Rico 6.0%, Montana 5.9%, Tennessee 4.5%, Nevada 4.3%. - High prevalence: South Dakota 3.9%, New Mexico and North Dakota 3.5%, Rhode Island 3.3%, Virginia 3.2%, South Carolina 3.1%. - Elevated: North Carolina and Utah 2.8%, Texas 2.7%, Missouri 2.4%, New Jersey 1.9%. - Lowest: New York, Ohio, Oklahoma and West Virginia 0.5%; New Hampshire 0.7%. - Exposure risk: In a room of 10, estimated probability reaches 50% in Oregon and Washington; over 99% in a room of 100. - Notes: Red shading indicates higher prevalence. CDC categories revised downward in August 2026. Limited reporting in some states; data updated October 17.