The COVID-19 variant NB.1.8.1, informally known as "Nimbus," has recently emerged, causing concern due to its rapid spread and a distinctive symptom: an intensely painful sore throat described as feeling like "razor blades."
🔍 Key Characteristics of NB.1.8.1
Origin and Spread: First identified in early 2025, NB.1.8.1 has been detected in over 20 countries, including the UK, US, China, and several Southeast Asian nations.
Symptoms: In addition to the severe sore throat, common symptoms include fever, fatigue, cough, nasal congestion, muscle aches, and gastrointestinal issues such as nausea and diarrhea.
Transmission and Immunity: Genomic analysis indicates that NB.1.8.1 carries mutations in the spike protein, potentially enhancing its transmissibility and enabling partial evasion of immunity from prior infections or vaccinations.
Severity: Despite its rapid spread, current data suggest that NB.1.8.1 does not lead to more severe disease compared to earlier strains.
🧾 Symptom Relief and Prevention
Home Remedies: To alleviate throat pain, individuals can stay hydrated, use throat lozenges, gargle with warm salt water, and take over-the-counter pain relievers.
Medical Attention: Seek medical care if symptoms worsen or if breathing becomes difficult.
Preventive Measures: Continue practicing good hygiene, wearing masks in crowded areas, and avoiding close contact with infected individuals.