Whooping cough cases in Colorado have tripled so far this year, and schools are experiencing clusters of the preventable respiratory disease, according to the state health department.
The Centers for Disease Control and Prevention reported Colorado had 333 cases of pertussis, the formal name for whooping cough, as of Aug. 3. At the same time last year, the state had 90 cases.
Nationwide, cases so far this year have more than tripled compared to last year, with the highest counts in Pennsylvania and New York.
Cases of pertussis in Colorado had trended down for years before the pandemic, from 1,431 in 2013 to 465 in 2019, according to data from the Colorado Department of Public Health and Environment. They hit a low of 29 in 2021, when most respiratory diseases largely went absent because of masking, social distancing and other COVID-19 precautions.
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While the number of cases this year wouldn’t have been unusual before the pandemic, the health department is “concerned” that they continue to rise and because schools are having outbreaks, state epidemiologist Dr. Rachel Herlihy said.
“We encourage people to make sure they and their children are up to date on vaccination, stay home when they’re sick and if they’re prescribed antibiotics, make sure they finish them,” she said in a statement.
Infants are at highest risk for complications, with about one in three needing hospital care and one in 100 dying, according to the CDC. People with less-severe cases don’t always have the characteristic “whoop” that comes from gasping for breath, and may spread the bacteria that cause it while thinking they have a lingering cold.
Antibiotics can shorten the time when someone is contagious, but they don’t do much to lessen the coughing. Otherwise, people don’t have many treatment options other than staying hydrated and possibly using a humidifier, unless they’re sick enough to need supplemental oxygen.
Vaccines are about 98% effective in preventing infection for the first year after the shot, but that gradually drops to about 71% effectiveness in the fifth year. Protection against severe illness lasts longer.
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To be up-to-date, babies need to get shots at two, four and six months, with two more shots before they turn 6 and a booster at about 11 or 12. The CDC also recommends a shot in the third trimester of pregnancy to protect the baby immediately after birth. Some pediatricians tell other people who plan to visit a newborn to get a booster shot in the weeks before they do so, to reduce the odds they’ll unknowingly infect the baby.
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Colorado’s best ski deal? Maybe one that costs nothing at all. At Steamboat Springs’ Howelsen Hill, “Sunday Funday is taken to an entirely new level,” reads the city webpage for Ski Free Sundays. Yes, on Sundays throughout the season, visitors need only to walk into the ticket office to grab a pass at no charge. […]
While Colorado ranks near the middle of U.S. states for carbon emissions per capita, it still produces enough CO2 per person to rival countries on the World Bank’s list of top emitters internationally.
In 2023, Colorado produced 13.9 metric tons of carbon dioxide emissions per capita. If it had been ranked by the World Bank during the same year, Colorado would have placed 14th among the more than 200 countries on the list, just behind Canada, at 14.1, and just ahead of the U.S. as a whole, at 13.7.
Among U.S. states, Colorado ranked 26th in carbon emissions per capita. Wyoming had the highest per capita emissions in the country, at 92.9 metric tons, while Maryland had the lowest, at 7.8.
Most of Colorado’s emissions come from energy production and consumption, primarily natural gas and oil production and electric power production and consumption.
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The Colorado Sun partners with Gigafact to produce fact briefs — bite-sized fact checks of trending claims. Read our methodology to learn how we check claims.
Sources
References:
Colorado State Energy Profile, U.S. Energy Information Administration, accessed in December 2025. Source link
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2023 Colorado Statewide Inventory of Greenhouse Gas Emissions and Sinks, pg. 128, Colorado Department of Public Health and Environment, November 2024. Source link
Senate Bill 24-230 Oil and Gas Production Fees, Colorado General Assembly, accessed in December, 2025. Source link
Senate Bill 23-016 Greenhouse Gas Reduction Measures, Colorado General Assembly, accessed in December 2025. Source link
Carbon dioxide emissions, World Bank Group, 2024, accessed in December 2025. Source link
Energy-related CO2 emission data tables, U.S. Energy Information Administration, accessed in December 2025. Source link
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Type of Story: Fact-Check
Checks a specific statement or set of statements asserted as fact.
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Cassis Tingley is a Denver-based freelance journalist. She’s spent the last three years covering topics ranging from political organizing and death doulas in the Denver community to academic freedom and administrative accountability at the…
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Just a few short days after landing tight end Houston Thomas from the NCAA transfer portal, Mike Elko and the Texas A&M Aggies have now added reinforcements on the opposite side of the line of scrimmage.
Former Colorado Buffaloes safety Tawfiq Byard has officially announced his move from the Big 12 to the SEC, just a handful of days after entering the portal himself.
After A&M safety Bryce Anderson’s recent announcement of his own portal entry, Byard could be just the replacement that Elko and new defensive coordinator Lyle Hemphill need in the “Wrecking Crew’s” defensive backfield.
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A&M Lands Safety Tawfiq Byard From Colorado
Byard will now play football for his third school in his college career, having also spent some of his playing days with the South Florida Bulls before making the move to Boulder to play for NFL Hall of Famer Deion Sanders and the Colorado Buffaloes.
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Colorado Buffaloes defensive back Tawfiq Byard (7) reacts in the first quarter against the Arizona State Sun Devils at Folsom Field. Mandatory Credit: Ron Chenoy-Imagn Images | Ron Chenoy-Imagn Images
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Byard’s sophomore campaign in 2025 was much more telling than that of his previous efforts with the Bulls, appearing in all 12 games for the Buffs while starting in eight of those games.
The defensive back would lead the Colorado defense with 85 tackles and was tied for 26th in the nation in the solo tackles category, with 57, and his eight tackles for loss were the third-most by a safety in the history of the program.
His performance, which also included two forced fumbles, an interception, and 0.5 sacks, earned him an honorable mention on the All-Big 12 team.
For a Texas A&M team that has struggled with injuries in recent years, including one to Anderson, a head injury during the win over Notre Dame, Byard’s durability is exactly what Texas A&M needs on defense, and his efficiency will help tie together what should be a younger A&M secondary in the 2026 season.
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During his pair of years in South Florida, Byard appeared in 16 games while starting 10, all of which came in his redshirted freshman season, where he finished with 54 tackles (34 solo), eight tackles for loss, two sacks, one interception, and a fumble recovery before transferring to Colorado.
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The Buffaloes had a rough ride of a season in their first without quarterback Shedeur Sanders and former Heisman Trophy winner Travis Hunter, with only a 3-9 record (1-8 conference) to show for in 2025, their lone conference win coming against a ranked Iowa State Cyclones team.
With the defensive backfield back in decent order, the Aggies now look ahead to a grinding offseason before starting their third season under head coach Mike Elko with a hosting of the Missouri State Bears at Kyle Field on September 5.
