The flu outbreak at Joint Base San Antonio Lackland Air Force Base has risen to 275 cases.
In the United States, COVID-19, pandemic H1N1 flu, and West Nile were most costly in terms of health and related expenses.
The US defense secretary lifted the flu vaccine mandate for troops 2 months ago. Now 160 trainees in Texas are sick.
The greater severity in 2025-26 may be attributable to more-virulent flu strains, mismatch between vaccine composition and circulating flu variants, and continued waning of COVID severity.
As fans travel to North American cities to watch their favorite soccer teams, they might face seasonal and travel-related infectious risks.
Pediatric flu deaths so far this season now total 149, most of them in unvaccinated children.
Increased post-COVID risk was noted for pulmonary embolism, abnormal breathing, fatigue, hemorrhagic stroke, brain fog, and palpitations.
Outpatient visits for flu are below the national baseline and weekly hospital admissions continue to fall, but 4 more pediatric flu deaths were reported this week.
There have been at least 28 million illnesses, 360,000 hospitalizations, and 22,000 total flu-related deaths this season, the CDC estimates.
A total of 90 US children have died from flu-related complications this season, according to the latest CDC update.
For the total 2025-26 flu season, 92% of flu specimens have been typed as influenza A.
The highest antibody levels were seen among those who were school-aged children during the 2009 H1N1 flu pandemic.
The use of antiviral treatments in children hospitalized for influenza fell sharply during the COVID-19 pandemic, according to a study in Pediatrics.
The number of US jurisdictions reporting very high or high flu activity fell from the previous week, from 45 to 36.
As of January 3, the CDC said there have been 17 pediatric flu deaths this season.
Officials don't know what caused gastrointestinal illness in 95 passengers and 9 crew on the Celebrity Eclipse in late December.
A COVID diagnosis was associated with 76% higher odds of death within 30 days.
Mexico has reported 92 cases of myiasis caused by New World screwworm as of November.
Only 1 state—Louisiana—reported high influenza-like illness.
Only 3 states report moderate levels of acute respiratory illnesses.
The CDC has closed its investigation into a Salmonella outbreak linked to eggs that sickened 105 people in 14 states.
This is the 18th case of human H5N1 avian flu in Cambodia this year.
Antiviral prescribing for influenza-positive kids at risk of severe illness in US emergency departments declined 53% compared with the prepandemic period.
Overall flu cases are 10.8% higher than last year across Australia.
Japan typically reports increased influenza activity at the end of November.
