WHO has spread to three countries the low season . It 's typically the low season for transmission of the virus . Meet India 's last polio patient . ` Syria , Pakistan and Cameroon are urged to put measures into place . 417 cases of polio were reported worldwide in this year , WHO says .
WHO has spread to three countries the low season . It 's typically the low season for transmission of the virus . Syria , Pakistan and Cameroon are urged to put measures into place . 417 cases of polio were reported worldwide in this year , WHO says .