US Flu Cases Spike in December: What You Need to Know & How to Stay Safe (2026)

A concerning surge in flu cases has hit the United States this December, following a particularly harsh flu season. The Centers for Disease Control and Prevention (CDC) has reported a significant increase in influenza cases, sparking worry among health officials. But what does this mean for you and your family? Let's dive in.

This spike comes on the heels of the 2024-2025 flu season, which was the most severe since 2018. The CDC's data indicates that over 3,100 individuals in the US succumbed to the virus in the year ending August 2025. This earlier, more intense start to the flu season is something to pay close attention to.

According to Jennifer Nuzzo, an epidemiologist at Brown University, the advice is clear: "If you haven't gotten vaccinated against the flu, you should get vaccinated, particularly young kids and older adults." This is crucial, as the flu season included 279 influenza-associated pediatric deaths, the highest reported during a seasonal influenza epidemic.

But here's where it gets controversial... A new variant, subclade K, has emerged, and Europe experienced high influenza activity in December. In the US, by December 20th, an estimated 7.5 million influenza cases and 81,000 hospitalizations were recorded. This marks a 25% increase in cases over the previous week. Currently, 32 states are experiencing a high or very high number of flu illnesses.

"A lot of people are getting the flu at the same time, which is always tough," Nuzzo explains. "That is actually tougher than a situation in which people get it and it’s spread out over a longer period. It could be a worse season, in part because more people are going to need care than hospitals can easily deliver."

And this is the part most people miss... Epidemiologists are concerned about the potential for lower vaccination rates. The CDC, under the leadership of Health Secretary Robert F. Kennedy Jr., canceled its campaign encouraging people to get vaccinated. By the start of December, about 130 million flu vaccines had been distributed in the US, which is 13 million less than the same point last year.

Nuzzo emphasizes, "It’s completely incredulous to me that after experiencing the worst flu season for kids on record that we could head into this flu season – with signs that it could be bad, based on the viruses circulating out there – with anything but a robust plan to encourage people to get vaccinated."

Some people might also question the effectiveness of the new vaccines against the latest variant. While protection may be slightly reduced, Nuzzo stresses that the vaccines still offer significant protection. Additionally, she points out that at-home tests are available, which can be helpful for those who might benefit from antiviral medication if taken soon after symptoms begin.

What are your thoughts on the current flu situation? Do you plan to get vaccinated, and what are your concerns? Share your opinions in the comments below!

US Flu Cases Spike in December: What You Need to Know & How to Stay Safe (2026)

References

Top Articles
Latest Posts
Recommended Articles
Article information

Author: Golda Nolan II

Last Updated:

Views: 5699

Rating: 4.8 / 5 (78 voted)

Reviews: 85% of readers found this page helpful

Author information

Name: Golda Nolan II

Birthday: 1998-05-14

Address: Suite 369 9754 Roberts Pines, West Benitaburgh, NM 69180-7958

Phone: +522993866487

Job: Sales Executive

Hobby: Worldbuilding, Shopping, Quilting, Cooking, Homebrewing, Leather crafting, Pet

Introduction: My name is Golda Nolan II, I am a thoughtful, clever, cute, jolly, brave, powerful, splendid person who loves writing and wants to share my knowledge and understanding with you.