ISLAMABAD - The number of reported cases of seasonal waterborne diseases especially of gastroenteritis has soared manifolds in twin cities with the arrival of monsoon rain spell. Likewise, every summer season the number of patients suffering from water-borne diseases has swelled and the situation is evident from the significant influx of patients going to the Outdoor Patients Departments of Gastro in public sector hospitals. Hospitals in twin cities were receiving Gastroenteritis patinets, but the heavy rain spell has contributed a lot in activating the viruses that causes waterborne diseases. The Pakistan Institute of Medical Sciences is receiving around 3,000 patients on monthly basis and out of total, 90 percent patients are suffering from gastroenteritis. Whereas the situation is no different in the Federal Government Services Hospital, commonly known as polyclinic as 40 to 50 patients are being treated on daily basis in the Outdoor Patients Department. Monsoon is most suitable season for the virus of water-borne diseases to grow especially the rotavirus and poliovirus becomes active in this season, said Dr Waseem Khawaja, Director of Outdoor Patients Department at PIMS. The areas affected with rainy water particularly those in Rawalpindi are dangerous, as there is no proper system to drain out the contaminated water in the residential areas, he added. As after the heavy rain the water pooled in low-laying areas, results in outbreak of waterborne diseases. He opined that diseases like gastroetities, Malaria, skin infection, dysentery, typhoid, paratyphoid, polio virus intestinal worms, diarrhoea and cholera are on the rise and a large number of people living near the affected areas could be exposed to such disease. Every third patient out of 10 that comes to Pakistan Institute of Medical Sciences is suffering from a water-borne disease, he further informed. Talking about the symptoms of gastroenteritis, Dr Waseem said it is a condition that causes irritation and inflammation of the stomach and intestines. Diarrhea, crampy abdominal pain, nausea, and vomiting are the most common symptoms, he continued. According to another health expert, 80 percent cases of diarrhoea and food poisoning are caused by rotavirus and to cure it doctors should not prescribed antibiotic to the patients as it can further worsen patients situation.