Listeners, here’s what you need to know today about public health alerts in the United States as of August 7, 2025.
The nation is experiencing its most significant measles activity in recent years. According to the Centers for Disease Control and Prevention, there have been 1,356 confirmed cases of measles in 41 states so far in 2025, with 32 active outbreaks. States with ongoing measles activity include Alaska, California, Texas, Florida, New York, Illinois, and many others across all regions. Tragically, there have been three measles-related deaths this year. Most cases are linked to outbreaks rather than isolated events, and the majority occur in people who are unvaccinated or have unknown vaccination status. Health officials urge everyone, especially travelers and families with young children, to verify that they are fully vaccinated with two doses of the MMR vaccine. If you are unvaccinated or your vaccination status is unknown, talk to your healthcare provider immediately, especially if you live in or plan to visit a community with active outbreaks, as the CDC emphasizes in its weekly updates.
COVID-19 remains a public health topic, with the CDC reporting that a new variant, known as “Stratus” or variant XFG, has quickly risen to become the third most common strain in the United States. As of late July, cases are reported as rising in 27 states, and likely growing in 12 more and in Washington, D.C. The CDC warns that infections are increasing or likely increasing in 40 states, with no states currently seeing a decline. The “Stratus” variant appears to cause symptoms similar to previous strains, but listeners should watch for updates and consider following the CDC’s guidance on testing, masking, and vaccination, particularly for vulnerable populations, as reported by USA Today and Newsweek.
There are also concerns around air quality linked to wildfires. The Arizona Department of Environmental Quality has issued a High Pollution Advisory in Maricopa County today, August 7, due to ground-level ozone expected to exceed healthy limits. Ozone pollution is especially risky for children, older adults, and those with asthma or other lung illnesses. Residents are advised to limit outdoor activity, particularly in the afternoon and early evening, and to monitor local air quality reports. In Colorado and parts of Minnesota, similar air quality warnings remain in effect due to wildfire smoke, with public health officials urging people in affected regions—especially sensitive groups—to remain indoors during periods of heavy smoke and avoid strenuous activity outside.
Internationally, the CDC has issued a travel advisory for Americans heading to China due to a chikungunya virus outbreak in Guangdong province, especially focused in the city of Foshan. More than 7,000 cases have been reported since June. Chikungunya is spread by mosquitoes and causes fever and severe joint pain. While rarely fatal, it can result in long-lasting health problems. The CDC suggests using effective insect repellent, wearing long sleeves, and seeking prompt medical attention if symptoms develop after international travel. Vaccination is now recommended for travelers to areas with chikungunya outbreaks, and two vaccines are available in the U.S.
In mental health, the CDC this week launched “Free Mind,” a national campaign to support teens’ mental health and prevent substance use as the new school year approaches. The campaign focuses on providing parents, teens, and caregivers with trusted resources on managing mental health and understanding the link with substance use.
Finally, the U.S. Preventive Services Task Force has updated its guidance, encouraging primary care providers to screen all adults for unhealthy alcohol use, emphasizing early intervention with brief counseling when risky drinking is detected.
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