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The Latest Breaking News from MMWR

Dengue Fever Has Now Surpassed 500 U.S. Cases and the Mosquito That Spreads It Is Expanding North

Dengue fever cases have surpassed 500 in the U.S. in 2026, with Aedes aegypti mosquitoes spreading northward. Florida and Southern states carry the highest risk, but Los Angeles saw local transmission last season.

Medical Daily · Jul 24

Utah Detects Measles in Wastewater Before Cases Are Reported, Changing How Outbreaks Are Fought

Utah's public health lab detects measles in wastewater weeks before clinical cases appear, enabling earlier MMR vaccination outreach. Here's how the surveillance system works.

Medical Daily · Jul 22

CDC Report Finds Hotels and Motels Are the Second Most Common Location for Fatal Drug Overdoses in the U.S.

A CDC MMWR report finds 9,651 fatal overdoses occurred in hotels and motels from 2022–2024. In most cases where a bystander was present, they did not intervene in time.

Medical Daily · Jul 20

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The CDC Refused to Publish This COVID Vaccine Study; Scientists Just Found Another Way to Get It Out

A COVID vaccine study, initially blocked by the CDC, was published in JAMA Network Open, showing a 50% reduction in hospitalisations among vaccinated adults.

International Business Times UK · Jun 24

CDC Confirms One Child Died in Chicago Migrant Shelter Group A Strep Outbreak with 166 Positive Cases

CDC's June 2026 EID report confirms one pediatric death and 166 GAS cases in a Chicago migrant shelter outbreak, highlighting congregate shelter infectious disease risks.

Medical Daily · Jun 23

The Ebola Outbreak in DRC Just Hit 837 Confirmed Cases. The CDC Has a Dire Projection — Here's What It Means for the U.S.

Ebola DRC: 837 confirmed cases, 196 dead as of June 15. No vaccine or treatment for Bundibugyo strain. CDC models project 20,000+ cases in 90 days. JFK screening active.

Medical Daily · Jun 20

Dangerous Herpesvirus Infections in Organ Transplant Recipients Rise Fivefold Amid Lack of Routine Donor Screening

CDC MMWR (March 5, 2026): A fivefold increase in suspected donor-derived KSHV infections in organ transplant recipients — 46 cases in 2021–2025 vs. 9 in 2016–2020. KSHV causes Kaposi sarcoma and life-threatening lymphoproliferative disorders in immunocompromised recipients. Routine donor screening is not performed.

Medical Daily · Jun 16

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A Fungal Pathogen That Can Destroy Vision Triggered a Clinic Outbreak Linked to Eye Procedures — A New CDC MMWR Investigation Published This Week Exposes a Critical Gap in Ophthalmic Safety

CDC MMWR (January/June 2026): Purpureocillium lilacinum keratitis was linked to an ophthalmology clinic in New York City (2024) and a pseudo-outbreak at a dermatology clinic in Washington. P. lilacinum is an antifungal-resistant mold that can cause permanent vision loss. Here is what patients and clinicians need to know.

Medical Daily · Jun 16

New York Vacation Rental Hot Tub Linked to Legionnaires' Disease in CDC MMWR Report as Owner Refuses Closure

CDC MMWR (June 11, 2026): A hot tub at a private vacation rental in western New York caused a Legionnaires' disease outbreak in 2024–2025. Whole-genome sequencing confirmed the link. The rental owner initially refused to comply with CDC guidance. Here is what summer vacationers and Airbnb renters need to know.

Medical Daily · Jun 15

HEALTH ALERT: CDC Reports Valley Fever Cases Have Doubled in Phoenix Metro Over 17 Years — And the Fungal Lung Infection Is Spreading Beyond Its Historical Boundaries

A landmark federal surveillance study published in the CDC's Morbidity and Mortality Weekly Report on February 19, 2026 has confirmed what public health officials in Arizona have been warning about for years: Valley fever (coccidioidomycosis), the fungal lung disease caused by inhaling soil-borne Coccidioides spores, has approximately doubled in incidence…

Medical Daily · Jun 1

Leaked CDC Report Reveals RFK Jr Officials Blocked Flagship Medical Journal From Publishing Positive Covid Vaccine Data

A CDC study indicating Covid-19 vaccines halve hospitalizations was blocked from publication, sparking debate over political interference in scientific processes.

International Business Times UK · Apr 23

RFK Jr’s CDC refuses to release report that shows Covid vaccine led to drop in hospital visits

Study originally planned for publication in March found that a fall coronavirus jab rendered adults 50 percent less likely to need an emergency room visit last winter and 55 percent less likey to end up hospitalized

The Independent UK · Apr 22

This year's flu shot was up to 78% effective at preventing hospitalization in kids, early data finds

Early data suggest that the 2024-2025 flu shots have effectively lowered rates of flu hospitalization and outpatient visits in vaccinated people.

LiveScience · Feb 28, 2025

2 'exclusively indoor' cats in Michigan caught bird flu, potentially from their owners

A new report details the bird flu cases of two pet cats in Michigan whose owners work in the dairy industry. Earlier in the month, a data table from the report briefly appeared on the CDC website before being taken down.

LiveScience · Feb 20, 2025

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Top News · Feb 7, 2025

CDC Resumes Publication On Health Effects Of Wildfires

The MMWR, a key CDC publication, resumes with studies on wildfire health effects, emphasizing timely information for public health.

The Independent UK · Feb 6, 2025

'Voice of the CDC' resumes publication, but experts worry about what they're not hearing

A federal scientific publication has returned from a forced two-week hiatus with two papers examining the health effects of wildfires in Hawaii and California

Salon · Jan 30, 2025

Trump admin stalling bird flu studies

"The equivalent of finding out that your local fire department has been told not to sound any fire alarms"

LiveScience · Jan 5, 2024

2nd tuberculosis outbreak linked to bone grafts in the US

Following two recent outbreaks, health officials have issued new guidance around how to screen donated tissues for tuberculosis.

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LiveScience · Dec 1, 2023

Kids under 5 with HIV are dying at high rates. Here's why.

Among people on HIV meds, young children are the likeliest to die, often due to late diagnosis or treatment interruptions.

LiveScience · Nov 18, 2023

Measles deaths jumped over 40% from 2021 to 2022, CDC reports

Declines in measles vaccination during the COVID-19 pandemic have been tied to an uptick in measles cases, deaths and major outbreaks worldwide.

Tribune News Service · Oct 17, 2022

Trump’s CDC changed COVID reports under political pressure, panel finds

The CDC bowed to the Trump administration’s demands to change the editorial process of its weekly scientific journal after warnings from then health secretary Alex Azar to “get in line,” a House investigation found.

Reason · Oct 6, 2022

New Survey Data Show Adolescent Vaping Remains Far Less Common Than It Was a Few Years Ago

The CDC is still citing underage consumption as a reason to restrict adult access.

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