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  5. India COVID Surge: Variant Update & What You Need to Know
CK Birla Hospital
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There have been several outbreaks that really changed how we see life, and COVID-19 is definitely one of them. It transformed everything from our work habits and travel routines to how we prioritize health and human connections. Even though the world has moved on and COVID isn’t making headlines like it used to, the virus is still very much around. In fact, a new variant has quietly entered the scene, reminding us that this story isn’t quite over yet. In recent months there has been a gradual uptick in cases, largely attributed to the highly transmissible Omicron sub-variant JN.1, along with emerging strains like NB.1.8.1 and LF.7

Rise of COVID-19 New Variant

According to some early research, the new strains NB.1.8.1 & LF.7 (a subvariant of omicron) are said to be more contagious as they are more capable of attaching themselves to human cells. However, there is yet no data showing that the variant is more harmful than the previous ones. 

So far the cases in India are gradually rising and a total of 1010 active COVID cases have been reported, with the maximum cases being reported in the states of Kerala, Maharashtra, Delhi, Gujrat, and Tamil Nadu. Seven deaths have been reported in the country so far. Additionally, the hospitals in the states like Telangana, Karnataka and more have reported an increase in patients presenting with mild flu-like symptoms – fever, fatigue, dry cough, etc. Across Asia, a rise in the number of affected patients has been reported, specifically in Hong Kong, Singapore, Thailand, and more.

While the steady increase in cases might seem alarming, there’s no need to panic just yet. Also, the monsoon season is rolling in, and there’s also a rise in flu-like symptoms. However, we should remember that underlying COVID-19 infections can still be a concern, especially for older adults and those with chronic health issues.

India COVID-19 Active Cases (May 26, 2025)

State Active COVID-19 Cases
Kerala 430
Maharashtra 210
Delhi 104
Gujrat 83
Tamil Nadu 69
Uttar Pradesh 15

Source: https://covid19dashboard.mohfw.gov.in/ 

Active Cases of New Covid-19 Variant in Delhi:

As per the status shared by the Ministry of Health & Family Welfare, active cases in Delhi have reached 104. However, there is no alarming situation so far, additionally, the hospitals in the national capital are also prepared for any escalations. Gurugram reported 6 active cases so far. 

Active Cases of New Covid-19 Variant in Mumbai:

Active COVID-19 cases in Mumbai saw a spike with 36 active cases and one fatality. While Maharashtra reported a total active cases of 210. 

Details About New Variants

In India, 2 main sub variants namely NB.1.8.1 and LF.7 are reported to be affecting people in the majority of states including Kerala, Maharashtra, Delhi NCR, and Tamil Nadu. The sub-variants are part of the evolving Omicron variant. The first NB.1.8.1 was found in Tamil Nadu in April while the first case of LF.7 was detected first at Gujrat. 

Both NB.1.8.1 and LF.7 are sub-lineages of the JN.1 variant, which remains the most dominant strain in India. These variants are being monitored by the World Health Organization (WHO). As per the initial reports, these sub-variants are more infectious and transmissible, though the severity of illness caused by them is low. 

According to a renowned pulmonologist at the Calcutta Medical Research Institute (CMRI) Dr. Arup Halder, the reported cases remain mild with low hospitalisation rates. 

Symptoms and Severity of New Variants

Individuals affected with the new COVID-19 strain are reporting a range of symptoms. While some of the symptoms are similar to those of older variants, there are newer symptoms too. 

  • Low-Grade Hyperthermia:

    The most common symptom being reported is persistent low-grade hyperthermia. The low-grade increase in body temperature may indicate an issue with the body’s thermoregulation mechanism,

  • Gastrointestinal Distress:

    The new variants, particularly NB.1.8.1 and LF.7 are known to cause nausea, loss of appetite, gastrointestinal discomfort, and more in certain individuals.

  • Fatigue:

    Extreme fatigue and muscle pain are also commonly being reported given the new Covid variant. 

  • Upper Respiratory Symptoms:

    Individuals diagnosed with the new variants are also reporting upper respiratory symptoms including sore throat, cough, runny nose, mild fever, and more.

  • Neurological Symptoms:

    Neurological symptoms are also being reported by individuals including headache, dizziness, etc.

The symptoms usually appear 2 to 14 days after exposure and are often mild. Additionally, persistent low-grade fever without sweating & chills and gastrointestinal issues including diarrhoea, loss of appetite, etc. are the two different symptoms being reported commonly. 

What to do when you Experience these Symptoms?

If you’re experiencing symptoms like mild continuous fever without any notable sweating & chills, loss of appetite, stomach discomfort, along with respiratory symptoms like runny nose, cough, and sore throat, it is recommended to,

  • Get tested for COVID-19 to confirm infection.
  • Self-isolate at home to avoid spreading.
  • Stay well hydrated and take adequate rest.
  • Monitor signs & seek medical help if experiencing any severe issues.

Preventive Measures

Several reports suggest that the new strain of coronavirus has the potential to spread rapidly, the Ministry of Health and Family Welfare, India has recommended the following preventive measures:

Vaccine: Vaccines are the key to reducing the risk of severe illness. Ensure the vaccinations are up to date and booster doses are lined up.

Wear Mask: Wearing a mask is the first line of prevention, especially when in crowded places.  It helps prevent and avoid the spread of the virus.

Maintain Proper Hygiene: Ensure washing hands regularly with soap and water. Additionally, use a sanitiser when outside. 

Monitor Symptoms: Keep note of the symptoms like low-grade fever, nausea, stomach discomfort, sore throat, runny nose, and more. 

Isolation: Isolate yourself if experiencing any of the symptoms, take adequate rest and avoid the spread of infection. 

Conclusion

It’s important to stay safe right now, but there’s no need to panic. The vaccines are doing a great job and are effective against these new variants. Still, taking preventive measures is crucial to managing their impact. Make sure to wear a mask when you’re out, avoid crowded or enclosed spaces, self-isolate if you’re feeling any symptoms, and keep up with your vaccinations and booster shots. Plus, those at higher risk- like older adults, people with existing health conditions, and infants – should take extra precautions to stay safe. We’re seeing a surge in India, especially in metro cities where the population density and exposure are higher, so it’s even more important to be vigilant.