The Centre on Monday issued an advisory to states urging them to monitor and report any influenza-like illness amid rising cases of Covid in the country, including the detection of one case of subvariant JN.1. "As the Covid-19 virus continues to circulate and its epidemiology behaviour gets settled in Indian weather conditions and circulation of other usual pathogens, it is of utmost importance that we maintain a state of constant vigil over the Covid situation, right up to the district levels," said the Ministry of Health. The Centre, citing the upcoming festive season, said there is need to "put in place requisite public health measures and other arrangements to minimize risk of increase in transmission of the diseases by adherence to maintenance of respiratory hygiene".