This winter is seeing an unusual combination of viral activity across the United States, with some illnesses on the decline while others are surging.
Flu Activity Remains High
Influenza continues to affect many Americans, particularly those 65 and older. The CDC reports that there have been over 24 million flu cases this season, including at least 57 children who have died from complications related to the illness.
Despite efforts to combat the outbreak, schools are still closing due to high numbers of flu cases.
Whooping Cough Cases Rise
The number of whooping cough (pertussis) cases has increased significantly in recent years, with over 32,000 reported cases in 2024. The CDC reports that vaccination rates have declined among children, contributing to the surge.
Experts emphasize that vaccination is key to preventing this highly contagious disease.
Measles Cases Climb
Although measles was declared eliminated in the US in 2000, cases have been rising due to low vaccination rates. In recent years, over a dozen outbreaks have occurred across the country, with some of them linked to high vaccine exemption rates.
Norovirus Outbreaks Continue
The norovirus is causing stomach issues for many Americans nationwide, leading to nearly 1,100 reported outbreaks since August 2024.
Bird Flu Affects Dairy Farms and Egg Supplies
Avian influenza has affected hundreds of dairy farms and thousands of poultry flocks in the US. The CDC reports that there have been no documented cases of transmission through eating properly handled chicken or eggs, but experts still caution people to avoid raw or undercooked poultry products.
COVID-19 Surge Remains Low
This winter’s COVID-19 surge has been relatively mild compared to previous waves, with over half of the US states reporting high viral activity levels in wastewater. Experts attribute this to lingering immunity from a large summer surge and the introduction of new vaccines.
RSV Cases Decline Across Most States
Overall, while some viruses are on the rise, others, like RSV, have declined significantly, likely due to the effectiveness of new vaccines.
Source: https://nypost.com/2025/02/12/health/what-to-know-about-the-viruses-fueling-illness-across-the-us