Health officials on Thursday confirmed a fresh case of polio in an eight-month-old boy in Karachi. This is the third case of crippling type P1 polio in the country this month. The two earlier cases were detected in Swat valley, where unrest has prevented regular vaccination. The latest detection of polio in a middle class central Karachi neighbourhood has stunned authorities that have convened a special meeting on Friday to discuss ways to contain the disease. "I can confirm detection of type P1 polio virus in an eight-month-old boy in Sadar town," Dr Mazhar Khamisani, project director for Expanded Programme on Immunisation, told AFP. He said that samples were taken from the child on June 10 and sent to the National Institute of Health in Islamabad, adding that the virus was not detected, after which a sample was sent to a World Health Organisation lab in Geneva. "We got the confirmation from WHO Geneva today," Dr Khamisani said, adding that initial investigations showed that the child, who is alive, was regularly vaccinated. The total number of polio cases in Pakistan this year is now 18, officials said. The World Health Organisation recently listed Nigeria, India, Pakistan and Afghanistan as the only countries in the world where polio is endemic.