As of May 2025, the World Health Organization (WHO) has classified the NB.1.8.1 subvariant of SARS-CoV-2 as a ‘Variant Under Monitoring’ (VUM). This designation indicates that while NB.1.8.1 exhibits mutations warranting attention, it does not currently pose a significant global public health risk. Link to WHO Document
The variant has been detected in India, with cases reported in states such as Kerala, Tamil Nadu, Karnataka, Telangana, Delhi, and Maharashtra
🧬 Symptoms of Covid New Varient NB.1.8.1
Preliminary observations suggest that NB.1.8.1 shares several symptoms with other Omicron subvariants, including JN.1. However, some unique manifestations have been noted:
- Persistent Low-Grade Hyperthermia: Unlike traditional fever, many individuals report a sustained mild increase in body temperature without the typical fever spikes
- Respiratory Symptoms: Cough, sore throat, and nasal congestion are common.
- Gastrointestinal Issues: Symptoms such as nausea, diarrhoea, and loss of appetite have been observed.
- Neurological Effects: Some individuals experience fatigue, headaches, dizziness, and difficulty concentrating.
- Visual Disturbances: Blurred vision has been reported in certain cases.
These symptoms often overlap with those of other respiratory illnesses, making it crucial to seek medical advice if they persist or worsen.
Severe symptoms like chest pain or difficulty breathing are rare. However, people with underlying health conditions, compromised immune systems, or advanced age should remain vigilant and seek medical care if symptoms worsen.
TESTING & DIAGNOSIS
RT-PCR (Reverse Transcription Polymerase Chain Reaction)
This is the most widely used and reliable test. A sample is usually taken from the nose or throat using a swab. RT-PCR can detect the presence of the virus even in the early stages of infection.
RAT (Rapid Antigen Tests)
Rapid Tests provide results within 15 to 30 minutes and are commonly used for screening. However, they may miss early or asymptomatic cases, which is why negative results may still require confirmation through RT-PCR.
🛡️ Recommended Precautions
While the current risk remains low, it’s essential to remain vigilant and adopt preventive measures:
- Vaccination: Stay updated with COVID-19 vaccinations, including booster doses, as they offer protection against severe illness.
- Mask Usage: Wear masks in crowded or poorly ventilated indoor spaces, especially if symptomatic or in contact with vulnerable individuals.
- Hand Hygiene: Regularly wash hands with soap and water for at least 20 seconds or use an alcohol-based hand sanitizer.
- Social Distancing: Maintain physical distance from individuals showing symptoms of respiratory illness.
- Self-Isolation: If symptomatic, avoid close contact with others and seek medical consultation promptly.
- Monitoring Symptoms: Be alert to any changes in health, especially if symptoms escalate or new ones emerge.
Health authorities in various states in India, including Karnataka, have issued advisories emphasizing these precautions, particularly for high-risk groups such as the elderly and those with underlying health conditions .
Current Situation- Covid Cases in India
Despite the detection of NB.1.8.1 and other variants like JN.1, the overall COVID-19 situation in India remains under control. Health infrastructure is adequately prepared, and hospitalization rates remain low . However, health officials continue to monitor developments closely and advise the public to adhere to recommended precautions.
While the emergence of new variants like NB.1.8.1 can be concerning, current evidence suggests that they do not pose a significant threat to public health. By staying informed, adhering to preventive measures, and seeking medical advice when necessary, we can collectively manage and mitigate the impact of these variants.
Disclaimer:
The information provided in this article is for general information purposes only and does not constitute any medical advice. No claims, advise or recommendations mentioned in above article should be taken accepted without checking with your doctor. Always consult with a qualified healthcare professional or your doctor for starting any supplement & diagnosing or treating any medical or health related conditions .