Noida, May 28 -- Gautam Budh Nagar has reported a sudden spike in COVID-19 cases, with 15 active cases confirmed over the past three days, district health officials said on Tuesday. The uptick-one case on Saturday, eight on Sunday, and six on Monday-has prompted the health department to remain on high alert. "All patients are stable and under home isolation. We are closely monitoring the situation and prepared to respond swiftly if numbers increase," said chief medical oficer (GB Nagar) Dr Narendra Kumar. The infections include men and women aged between 24 and 71. A 43-year-old Sector 119 resident recently returned from Chennai, while the rest had no travel history and reside in Noida or Greater Noida, according to district health officials. Officials said all cases were detected at private hospitals or diagnostic labs. Only one patient required hospitalisation before shifting to home care. Contacts of the infected individuals have shown no symptoms yet and have not been tested, but may be if symptoms emerge, they added. Delhi, meanwhile, has reported 99 new Covid-19 cases in last week, raising active caseload in the city to 104, according to Ministry of Health and Family Welfare's COVID-19 dashboard....