KARACHI - One more case of polio has been detected in the metropolis as a thirteen-month-old boy belonging to Gadap town was diagnosed suffering from the fatal disease on 3rd July at a private hospital in the area. With the detection of this case, which has not still been confirmed by the authorities concerned, so far a total of 12 polio cases have been reported in the city, The Nation has learned on Monday.   The thirteen-month-old boy, affected with the polio virus, was hospitalised on 3 July, but on 8 July, Dr Mazhar Khamisani, the project director for Sindh Expanded Programme on Immunisation (EPI), said. He added "The report about the detection of the new polio case in Karachi is not correct because the said case was confirmed positive. The National Institute of Health (NIH), Islamabad, has not released the report of the case, while the stool sample of the said boy had been sent to the NIH on 7th July. A total of 10 polio cases have so far been officially reported in Sindh." It is worth mentioning that maximum numbers of polio cases have been reported in Sindh as 12 out of the total 18 polio cases have only been reported in Sindh unofficially. Around 5 cases in NWFP and 2 cases have been reported in Balochistan so far.