Four people suffering from fever, cough and breathing complications died in Netrakona, Khulna, Chandpur and Narail on Saturday night and Sunday.   In Netrakona, 45-year-old man died around 10pm at his residence in the municipality area in Mohanganj upazila of Netrakona district on Saturday night.     Dr Subir Sarkar, resident medical officer of Mohanganj Upazila Health Complex, said he appeared at the hospital with the health complications on Thursday.   Noticing symptoms like that of coronavirus, doctors collected samples from him and suggested him staying in isolation.   In Khulna, Khadiza, 65, a resident of Tutpara in the city who had been suffering with fever and cold died at Khulna Medical College and Hospital (KMCH) early Sunday.    Dr Shoilendra Biswas, a spokesperson of KMCH, said the woman got admitted to the hospital around 9 pm on Saturday and later she was shifted to the Intensive Care Unit (ICU) of the hospital following deterioration of her condition where she breathed her last around 4 am.