Silent wave of JN.1 Covid virus among the population in Hyderabad and Secunderabad
The Hindu
Monitoring wastewater for new virus strain JN.1 spreading silently in Hyderabad and other cities. Vaccines and testing can help prevent severe disease.
COVID positive numbers in the daily official communique may be in single digits, but the new virus strain JN.1 has clearly transmitted to a majority of population in the twin cities as per the analysis from the waste water sampling being conducted by the scientists of the CSIR-Centre for Cellular & Molecular Biology (CCMB), CSIR-Indian Institute of Chemical Technology (IICT) and Tata Institute for Genetics & Society (TIGS-Bengaluru).
“This new variant, a close relative of the variant Omicron, is an interesting and peculiar one evading the immunity obtained through previous infections or vaccines infecting people. It is spreading silently as most cases are asymptomatic or even mild where an infected person may not even know. But, it has not shown any major illness in clinical context,” says TIGS Director Rakesh Mishra, also the former CCMB director.
In an exclusive interaction, the top scientist points out that the number of hospitalisations are very less but waste water sampling being conducted across cities of Hyderabad (18 open drains), Bengaluru (26 STPs – sewage treatment plants that cover most of the city), Vijayawada, Pune and others, have been showing increasing trend in virus being discharged through the toilets into the drains in all the municipal areas since beginning of last month.
“The virus load has been climbing rapidly since past few weeks and soon, we will know if the trend of infections is increasing or beginning to decrease, by keeping on checking the wastewater samples. The peak is generally reached within six-eight weeks of the initiation across the population,” he explains.
Since the wave is ‘silent’ with little or no usual symptoms of cold or throat pain, headache or mild fever (or all three), it is imperative for the medical and health authorities to conduct molecular testing of the hospitalised cases to understand the nature of the infection and variant in case of SARS-CoV-2.
“The 65 plus aged people and those with co-morbidities having chronic illnesses should exercise caution by face masking, avoiding crowded places and maintaining hand hygiene as even if largely mild or asymptomatic, it could harm them. Available diagnostic kits are able to detect the current variant so better to get tested when symptoms surface, as it is similar to flu,” cautions Dr. Mishra.
Others too better mask up (surgical mask or N-95) at crowded places to reduce the rate of infection because unchecked and higher level of infections will allow the virus to circulate further and, thereby, enhance probability of it to evolve into variants which could compromise the body’s immunity, worse clinical symptoms and cause more problems.
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