Nearly 15,000 nurses across three major New York City hospital networks have gone on strike after contract negotiations failed. The nurses are demanding higher pay, safer staffing levels, better security, and manageable workloads, citing issues like staffing shortages and proposed benefit cuts. The strike, one of the largest in the city's history, impacts Mount Sinai, NewYork-Presbyterian, and Montefiore Medical Center, raising concerns about patient care during flu season. City and state leaders have urged a resolution, emphasizing the value of nurses' work.