Mumbai, July 2 Doctors caution against self-medication, advise immediate medical intervention Besides large number of cases of leptospirosis, dengue, malaria, gastroenteritis and viral fever, doctors across the city are also seeing a small, but significant, surge in typhoid cases. "Pre-monsoons we saw hardly one typhoid case in 15 days. But now we are getting at least two per week apart from the usual viral fever, malaria and sporadic dengue cases,' said Dr Jayesh Lele, a private practitioner in Malad. Doctors say cases of water borne diseases like typhoid and hepatitis rise once monsoon begins. Hepatitis will start shortly, but there is a surge in typhoid cases already. Typhoid, caused by the bacterium salmonella enterica seovar typhi, is transmitted by the consuming food or water contaminated with feces from an infected person. "During monsoons the gastrointestinal system is bombarded due to water borne diseases. While we used to get four cases a week before monsoons, now it is eight in a week. Yesterday, we admitted four patients and on Wednesday two more. They came with fever not relenting and were put on intravenous medication as they stopped responding to oral medication,' said Dr Hemant Thacker consultant physician at Bhati and Brech Candy hospital. Many doctors claim that the poor response to oral medication is also because of irrational use of drugs. "Of what we are seeing, there is a change in profile of the disease. We are seeing more of