India, Dec. 22 -- Fears of some sort of resurgence of Covid-19 rose this week following detection of the JN.1 variant in Kerala. JN.1 has arisen suddenly and now accounts for a growing proportion of cases that were genome-sequenced in many parts of the world. JN.1 appears to be displacing other variants - a hallmark of a fitter mutation of the Sars-CoV-2. Its detection in India spooked the stock markets on Wednesday, but neither abroad nor in India have there been signs that it could be a cause for concern. Health ministry officials said the states where the variant has been found - Kerala, Maharashtra, Tamil Nadu and Karnataka - are not reporting any increase in hospital admissions. In fact, the Union health secretary told a meeting on Wednesday that most of the infections were incidental findings - that is, in people who were brought to a medical facility for some other reason....