Britain is facing a fresh COVID wave as new FLiRT variants take hold across the nation, with health officials monitoring a concerning uptick in cases. The KP.2 and KP.3 strains, descendants of the JN.1 variant that dominated winter infections, are demonstrating increased transmissibility that's catching many by surprise.
What Are the FLiRT Variants?
The newly identified FLiRT variants, scientifically known as KP.2 and KP.3, have undergone significant mutations that help them evade existing immunity. These changes occur in the virus's spike protein, the key that unlocks our cells, making previous infections and vaccinations less effective at preventing transmission.
Professor Steven Griffin, a renowned virologist from the University of Leeds, explains: "These variants represent another step in COVID's evolution. While they may not cause more severe illness in most people, their ability to spread more efficiently means we're likely to see increased case numbers throughout the summer months."
Recognising the Symptoms
The symptom profile for FLiRT variants shows some differences from earlier COVID strains. While many classic signs remain, there are notable changes in how the virus presents:
- Sore throat - Often the first and most prominent symptom
- Runny nose - More common than with previous variants
- Fatigue - Persistent tiredness that can linger
- Headache - Ranging from mild to severe
- Cough - Typically less severe than earlier variants
- Muscle aches - General body discomfort
Notably absent are some previously hallmark symptoms like loss of taste and smell, which have become significantly less common with newer variants.
Who's Most at Risk?
While FLiRT variants can infect anyone, certain groups remain particularly vulnerable:
- Elderly individuals and care home residents
- People with compromised immune systems
- Those with underlying health conditions including respiratory issues
- Individuals who haven't received recent booster vaccinations
The UK Health Security Agency continues to emphasise that vaccination remains the most effective protection against severe illness, hospitalisation, and long COVID.
Protection and Prevention Strategies
As we enter what experts are calling a "fifth wave," several measures can help reduce transmission:
- Stay updated with vaccinations - Current boosters still provide significant protection
- Practice good hygiene - Regular hand washing remains crucial
- Consider mask-wearing - Especially in crowded indoor spaces if cases are high in your area
- Ventilate spaces - Opening windows dramatically reduces transmission risk
- Stay home when symptomatic - Isolate if you develop COVID symptoms
With summer gatherings and holiday travel increasing, health officials urge the public to remain vigilant while continuing to enjoy normal activities with appropriate precautions.
