Alarmed by the recent reports of laboratory-confirmed polio-virus cases in Sindh, some highly designated international experts on polio eradication are rushing to Karachi to review the long prevailing supplementary immunisation activities and find out the loopholes. A source privy to the immunization initiatives in the province said that an emergency meeting of the Technical Advisory Group on Polio Eradication for Pakistan had been convened on June 24 and 25 at Karachi to review progress on "interrupting wild polio transmission'.