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Outbreaks, Heat & Smoke Risks Rise

Plus, FDA's food traceability rules extended...

August 8, 2025

We’re off next week for a summer vacation. ☀️ We’ll be back on August 19th, and as always will send push alerts through the ZHH app if anything urgent comes up. 

Health News:

  • The FDA proposed to extend the compliance date for its food traceability rule by 30 months to July 20th, 2028. (FDA)

  • A third person has died and at least 81 people are sick in the Harlem Legionnaires’ outbreak. (NYC)

  • RFK Jr. quietly endorsed fall flu vaccines for everyone six months and up. (MedPage Today)

  • Two California children developed neurological symptoms from raccoon roundworm last year, likely after eating something contaminated with feces. (CIDRAP)

  • Dozens of states are taking aim at food dyes and additives across the country. (NPR)

  • The U.S. measles outbreak has slowed but the start of a new school year brings renewed risk. (AP)

  • HHS cut about $500 million in mRNA vaccine contracts. (NBC)

  • The U.S. issued a travel alert after a chikungunya outbreak in China. (SF Chronicle)

  • 10 years after the first Zika outbreak, Brazilian mothers are raising kids that were born without the ability to eat, speak, or even walk. (BBC)

  • A new study found forever chemicals (PFAS) in some beers produced in the U.S. (STLPR)

  • 12% of Americans have tried GLP-1 drugs for diabetes or weight loss. (Rand)

Climate Health News:

  • A warmer, humid climate where ticks thrive is increasing the spread of Lyme and other diseases. (CNN)
  • 4 billion people experienced a whole extra month of extreme heat last year. (Yale)
  • Certain medications can increase your risk in the heat. (NPR)

Mental Health & Substance Use News:

  • CDC launched a new campaign to tackle substance use in teens struggling with their mental health. (CDC)

  • Nearly one in three Colorado kids say they can access a loaded gun. (Colorado Sun)

  • Wildfire smoke may have a negative impact on mental health, as well as physical. (Guardian)
     

If you or someone you know may be considering suicide or need help, call 988 or message the Crisis Text Line by texting HOME to 741741.

Best Questions:


What should we know about wildfire smoke and employee health?


The more we learn about wildfire smoke, the more we understand just how harmful it can be, even indoors and even hundreds of miles from where the fires are burning. Wildfire smoke is especially dangerous for people with asthma, COPD, diabetes, or heart disease, and for pregnant women or kids. Indoor air quality can be just as bad as outdoors, thanks to the very fine particles wildfires produce.

Indoor air quality (IAQ) mandates could be the next regulatory trend. California and New Jersey already have rules in place, and after the Canadian wildfire smoke turned the NYC skyline red in 2023, city officials began considering their own rules. This month’s double whammy of fires in the American West and Canada triggered air quality alerts in at least a dozen states, putting IAQ back on lawmakers’ radar. Even if your state doesn’t have specific regulations, clean indoor air could fall under OSHA's General Duty clause.

What can you do now? Keep outside air outside by closing windows, keeping doors shut, and checking that HVAC systems are not set to fresh air intake. Consider offering N95s for outside work or to help employees during their commute. Skip candles and air fresheners when air quality is bad, since those add to indoor pollutants.

Wildfire smoke is no longer a rare event for most of the country, and preparing your locations now can make all the difference in keeping your teams safe and your business running.

Sources: CNN, KFF Health News, WSJ, CDC, OSHA

We’re thinking of investing in portable neck cooling fans for outdoor employees. Does science support that? 

We’ve started to see them everywhere this summer: hands-free fans that hang around your neck and help keep you cool. The basics check out – people cool down when their sweat evaporates, and fans can help speed that process up. 

Most people who try them report that the fans help make the heat more bearable, but unfortunately they don’t actually do much to cool down people’s core temperatures, just mask it a bit. That can backfire, causing over-exertion in the heat without realizing it. As a result, fans aren’t actually useful for treating or preventing heat stroke. A better investment might be in other cooling garments, like vests, that focus on lowering someone’s core temperature. 

At the end of the day, if your business is interested in investing in a long-term strategy for heat illness prevention, start with policies, not products. Acclimatizing periods for new workers, frequent breaks, cool water, and strong SOPs for when to cut down on outdoor work should probably be your first lines of defense as heatwaves become more common. 

Sources: NPR

Best Read:


New research found that as temperatures increased, more people visited emergency rooms for illnesses beyond just heat stroke - including those linked to poison, respiratory symptoms and nervous system problems. Kids under 5 were most affected. 

Hotter summers could be making us sicker in unexpected ways - Washington Post (Gift Article)