(UPDATE) The Department of Health (DOH) confirmed Monday the third polio case in the Philippines since it announced the re-emergence of the debilitating disease in September.
The third confirmed case is a 4-year-old girl from Datu Piang town in Maguindanao, who did not receive any dose of oral polio vaccine (OPV), Health Secretary Francisco Duque III said in a statement.
The patient sought consultation at the Cotabato Regional Medical Center in September and was initially reported as a case of acute flaccid paralysis, according to Duque.
The patient's stool samples, which were sent to the National Institute of Infectious Diseases in Japan, tested positive for vaccine-derived poliovirus 2.
The DOH added that it was waiting for the results of a test on samples from another suspected polio case.
The third case was "genetically linked" to the vaccine-derived poliovirus 2 from the polio case recorded last September in Lanao del Sur, the first polio case in the Philippines after 19 years of being "polio-free," according to the DOH.
As part of its response, the DOH said it will be conducting a vaccination campaign for children aged 0 to 59 months in Datu Piang from November 4 to 8.
Aside from the cases in Lanao del Sur and Maguindanao, the DOH also recorded in September a polio case in Laguna.
Polio is a highly contagious disease caused when the polio virus invades the nervous system.
Symptoms include fever, fatigue, headache, vomiting, stiff neck and sudden onset of floppy arms or legs. Severe polio cases can also lead to permanent paralysis or even death.