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This is an archive article published on December 21, 2023

JN.1 variant observed in wastewater samples in Pune

The World Health Organisation has classified Covid 19 strain JN 1as a separate “variant of interest” given its rapidly increasing spread but said that it poses a “low global public health risk”.

Pune covid, Pune covid cases, pune JN 1 variant, Pune news, Pune news, Maharashtra news, Indian express newsIn Pune, CSIR-NCL and PKC along with others have been conducting regular surveillance in the city for SARS CoV-2 by testing wastewater samples collected from sewage treatment plants.

Pune-based Council for Scientific and Industrial Research – National Chemical Laboratory, Pune Knowledge Cluster along with other partners have picked up traces of JN 1, a variant of interest, in wastewater samples collected from two testing sites in Pune.

Dr Mahesh Dharne of CSIR-NCL and Priyanki Shah of PKC have confirmed that they have observed JN 1 variant in samples from two testing sites collected 10 days apart in Pune city.

The World Health Organisation has classified Covid 19 strain JN 1as a separate “variant of interest” given its rapidly increasing spread but said that it poses a “low global public health risk”.

In Pune, CSIR-NCL and PKC along with others have been conducting regular surveillance in the city for SARS CoV-2 by testing wastewater samples collected from sewage treatment plants.

Wastewater surveillance serves as an early warning that Covid-19 is spreading in a community.

So even if the alert researchers have observed the JN 1 variant in wastewater samples, Prof L S Shashidhara, founder of Pune Knowledge Cluster and Director, the National Centre for Biological Sciences, told The Indian Express that it was important to note that they have not observed it again in the same sites and also have not seen spreading to other sites.

“Currently, there is no clinical sample in which this variant has been detected,” Prof Shashidhara added.

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The team, however, is sequencing more wastewater and clinical samples and will continue to monitor for JN 1 variant and any other variants, Prof Shashidhara said.

The NCBS director also added that the pathogen surveillance consortium (APSI) is monitoring for new variants across Pune, Hyderabad and Bengaluru and this variant has not been detected in other cities.

Meanwhile, according to the Centers for Disease Control and Prevention, people infected with SARS-CoV-2 can shed the virus in their feces, even if they do not have symptoms.

The virus can then be detected in wastewater, enabling wastewater surveillance to capture the presence of SARS-CoV-2 shed by people with and without symptoms.

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This allows wastewater surveillance to serve as an early warning that Covid-19 is spreading in a community.

Following the alerts, health departments and communities can act quickly to prevent the spread of Covid 19.

When contacted Dr Bhagwan Pawar, Chief Medical Officer, Pune Municipal Corporation said that there was no case detected so far in Pune with JN 1 variant.

“However, we have issued guidelines on screening cases of influenza like illness and send samples for testing for Covid 19. A mock drill on health preparedness was also completed on December 17,” Dr Pawar said.

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“As per the report there are 11 government run health care facilities, 93 private hospitals and a total of 2442 doctors. There are at least 1482 doctors who have expertise and training about Covid 19 treatment. There are 3844 nurses The drill also showed that there are 1301 isolation beds in the city, 2296 oxygen supported beds, 674 ICU beds and 429 beds with ventilator support. There are 5832 RT-PCR test kits and more than 3 lakh rapid antigen test kits,” Dr Pawar added.

Anuradha Mascarenhas is a Senior Editor at The Indian Express, based in Pune. With a career spanning three decades, she is one of the most respected voices in Indian journalism regarding healthcare, science and environment and research developments. She also takes a keen interest in covering women's issues . Professional Background Education: A gold medalist in Communication and Journalism from Savitribai Phule Pune University and a Master’s degree in Literature. Author: She authored the biography At The Wheel Of Research, which chronicles the life and work of Dr. Soumya Swaminathan, the former Chief Scientist at the WHO. Key Focus: She combines scientific accuracy with storytelling, translating complex medical research into compelling public and human-interest narratives. Awards and Recognition Anuradha has won several awards including the Press Council of India's national award for excellence in journalism under the gender based reporting category in 2019 and the Laadli Media award (gender sensitivity -2024). A recipient of the Lokmat journalism award (gender category-2022), she was also shortlisted for the RedInk awards for excellence in journalism-2021. Her debut book At The Wheel Of Research, an exclusive biography of Dr Soumya Swaminathan the inaugural chief scientist of World Health Organisation was also nominated in the Popular Choice Category of JK Paper AUTHER awards. She has also secured competitive fellowships including the Laadli Media Fellowship (2022), the Survivors Against TB – New Research in TB Media Fellowship (2023) and is part of the prestigious 2025 India Cohort of the WomenLift Health Leadership Journey.” Recent Notable Articles (Late 2025) 1. Cancer & Specialized Medical Care "Tata Memorial finds way to kill drug-resistant cancer cells" (Nov 26, 2025): Reporting on a breakthrough for triple-negative breast cancer, one of the most aggressive forms of the disease. Discipline, diet and purpose; How a 97-year-old professor defies ageing'' (Nov 15, 2025) Report about Prof Gururaj Mutalik, the first Head of Department at Pune's B J Government Medical College who at 97 credits his longevity to healthy habits and a strong sense of purpose. 2. Environmental Health (The "Breathless Pune" Series) Long-term exposure even to 'moderate' air leads to chronic heart, lung, kidney issues" (Nov 26, 2025): Part of an investigative series highlighting that even "safe" pollution levels are damaging to vital organs. "For every 10 µg/m3 increase in PM2.5 level, there was 6-8% jump in medicine sales" (Nov 23, 2025): Using commercial data to prove the direct link between air quality and respiratory illnesses in Pune. 3. Lifestyle & Wellness News "They didn't let cancer, diabetes and heart disease stop them from travelling" (Dec 22, 2025): A collaborative piece featuring survivors who share practical tips for traveling with chronic conditions. At 17, his BP shot up to 200/120 mmHG; Lancet study flags why child and teen hypertension doubled between 2000 and 2020'' (Nov 12,2025)--A report that focusses on 17-year-old-boy's hypertensive crisis and reflects the rising global trend of high blood pressure among children and adolescents. 4. Scientific Recognition & Infrastructure For promoting sci-comm, gender diversity: IUCAA woman prof highlighted in Nature" (Nov 25, 2025): Covering the global recognition of Indian women scientists in gender studies and physics. Pune researchers find a spiral galaxy like the Milky Way from early universe'' (December 3, 2025)- A report on how Indian researchers discovered a massive galaxy that existed when the universe was just 1.5 billion years old , one of the earliest to have been observed so far. Signature Beat: Health, Science & Women in Leadership Anuradha is known for her COVID-19 reportage, where she was one of the first journalists to provide detailed insights into the Covishield and Covaxin trials. She has a dedicated interest in gender diversity in health and science, often profiling women researchers who are breaking the "leaky pipeline" in STEM fields. Her writing style is scrupulous, often featuring interviews with top-tier scientists and health experts from various institutions.   ... Read More


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