The new COVID strains going around in 2025–2026 mostly look like a very bad cold or flu, but with a few standout features like a sharp sore throat and long‑lasting fatigue.

Quick Scoop: What it Feels Like

Most recent variants (like NB.1.8.1 “Nimbus” and XFG “Stratus”) are Omicron- lineage strains that mainly affect your upper airways (nose, throat, sinuses) rather than deep in the lungs.

That means symptoms often start gradually and feel more like a stubborn, draining respiratory bug than the sudden “hit by a truck” feeling of classic early‑pandemic COVID or flu.

Most Common Symptoms Right Now

Doctors and clinics in 2025–2026 report that the “new strain” symptoms cluster around these signs:

  • Very sore throat, often sharp or “stabbing,” especially with NB.1.8.1/Nimbus and XFG/Stratus.
  • Dry or tickly cough that can be persistent.
  • Nasal congestion or runny nose, very cold‑like.
  • Fatigue, weakness, and a “worn‑down” feeling that can linger for days.
  • Headache.
  • Mild fever or chills (not always high).
  • Muscle or body aches.
  • Sneezing (more common with newer variants than in 2020–2021).

Less common but still reported:

  • Loss or change of taste or smell (much less frequent than in early strains).
  • Nausea, vomiting, or diarrhea.

What’s Different from Older COVID Waves?

Newer variants share a core symptom set (fever, cough, sore throat, congestion, fatigue) but the “signature” has shifted:

  • More upper‑airway symptoms
    • Strong sore throat and nose congestion are now front‑and‑center.
  • Less dramatic shortness of breath for many people
    • Severe lung involvement is less common than in 2020–2021, especially in vaccinated or previously infected people, though it can still happen in high‑risk groups.
  • Loss of taste/smell is no longer a hallmark
    • It still occurs, but far less often than with early variants.
  • Symptoms often build gradually
    • Flu tends to start suddenly with high fever and intense body aches, while new COVID strains often roll in over a day or two with sore throat, congestion, and then prolonged tiredness.

Variant “Flavors” People Are Talking About

Clinical write‑ups and news reports describe some traits for recent named variants:

  • NB.1.8.1 “Nimbus”
    • Very sharp or “razor blade” sore throat early on, plus congestion, dry cough, fatigue.
  • XFG “Stratus”
    • Predominant sore throat, with fever, fatigue, cough, sneezing, runny nose, and sometimes nausea or diarrhea; overall severity so far looks similar to other Omicron variants.

Overall, severity for most people remains mild to moderate, especially if vaccinated, but can still be serious for older adults, people who are immunocompromised, or those with chronic conditions.

How to Tell if It’s COVID, Flu, or Just Allergies?

Because everything overlaps, testing is still key.

Very roughly (not a diagnosis):

  • More suspicious for COVID (new strains) if:
    • Strong sore throat plus congestion, fatigue that hangs on, mild fever, body aches, and maybe some gut symptoms.
  • More suggestive of flu if:
    • Sudden high fever, intense body aches, and abrupt exhaustion.
  • More like allergies if:
    • Itchy eyes, lots of sneezing, clear runny nose, but no fever, muscle pain, or gut issues.

If you have symptoms, recent exposure, or are high risk, health authorities still recommend testing and following local guidance.

When to Seek Urgent Care

Even with these “milder” upper‑airway variants, you should seek urgent medical attention if you notice:

  • Trouble breathing or feeling like you can’t get enough air.
  • Chest pain or pressure.
  • Confusion, difficulty staying awake, or bluish lips/face.
  • Symptoms suddenly getting much worse after a few days.

Quick TL;DR

The new strain of COVID in 2025–2026 usually shows up as: a very sore or sharp throat, stuffy or runny nose, dry cough, fatigue, headache, mild fever, and body aches, with occasional loss of taste/smell or stomach issues.

Because it looks so much like a cold or flu, testing is the only reliable way to know for sure.

Bottom note: Information gathered from public forums or data available on the internet and portrayed here.