NEW DELHI: Fifty per cent of patients infected with coronary artery disease still have coronary symptoms six months after their recovery and have various health problems, according to a recent study. Eighty-three percent of the patients involved in the study said their muscles were still sore after recovering and they were suffering from depression and insomnia. The study included 103 cases of coronavirus infection from April to October 2020. Eight percent of them have long-standing symptoms of corona. This symptom is fatigue. Twenty-two percent said they had been feeling weak for months after recovering. 15 percent of people change their taste and smell. Eight percent of people have difficulty breathing.