Flu surge shows signs of slowing across UK hospitals

The wave of flu spreading through the UK has started to plateau. Hospital admissions are still climbing, but the pace has eased — a shift that suggests the worst of this season may be passing, though experts are cautious about calling it a peak just yet.

This year's flu arrived earlier than usual, creeping in a few weeks ahead of the typical autumn timeline. When people show up at their GP or hospital with flu-like symptoms, they get tested for influenza alongside COVID, RSV, and other viruses. The UK Health Security Agency tracks what percentage of those tests come back positive. Through autumn and into early winter, the numbers climbed steeply. But last week, they stabilized at a moderate level — a notable shift from the acceleration we'd seen before.

"It's too early to say whether this marks the start of the peak," the UKHSA notes. Flu is genuinely unpredictable. A lull can precede another surge. But the stabilization is real.

Hospital admissions tell a slightly different story. Last week, 3,140 people were hospitalized with flu — an 18% increase on the week before. That sounds dramatic until you look at the previous week, which had jumped 55%. The trend is flattening. The picture also varies sharply by region. Some areas are seeing numbers drop while others still face steep climbs, which matters if you're in a hospital system already stretched thin.

Older adults carry the heaviest burden. People over 85 are five times more likely to be hospitalized with flu than the general population. In the particularly severe 2017-18 season, around 25,000 people died from flu in England, with care homes hardest hit. Three years earlier, in 2014-15, an estimated 35,000 deaths occurred — one of the most lethal seasons in decades. Nothing in the current data suggests we're heading toward those numbers, but we won't have confirmed death figures until early next year.

Vaccination remains the clearest defense

The NHS continues to push vaccination as the most reliable protection, even though the virus has shifted genetically this year. The flu jab still offers meaningful defense, particularly against severe illness requiring hospitalization.

The vaccine is free for people over 65, young children, pregnant women, those with certain health conditions, carers, and frontline health and social care workers. Everyone else can get it from a high street pharmacy for £15–£25.

Update rates show real progress among older people and care home residents — more than 70% had received a jab by mid-December. But uptake among frontline NHS workers in England lags at just 39%, a gap that matters when hospitals are under pressure.

The coming weeks will clarify whether this stabilization holds or whether another surge emerges. For now, the trajectory suggests the season's intensity is beginning to ease.