Polio case definition for AFP surveillance ?

Ans. is `d' i.e., All of the above AFP Surveillance Acute flaccid paralysis (AFP) surveillance is carried out to identify all remaining infected areas, monitor progress towards eradication and target supplementary immunization appropriately. The term AFP means paralysis of acute onset involving limbs leading to flaccidity. Poliomylelitis is most impoant etiology of AFP, other causes are - GBS (Guillain-Barre syndrome), transverse myelitis and traumatic neuritis. AFP surveillance aims at detecting cases of AFP and repoing them immediately to district immunization officer. Surveillance is carried out for all cases of AFP and not just for poliomyelitis. All cases of AFP are repoed, regardless of the final diagnosis. As paralytic poliomyelitis is one cause of AFP, maintaining a high sensitivity of AFP repoing will ensure that all cases of paralytic poliomyelitis are detected, repoed and investigated, resulting in preventive central measures to interrupt the transmission of disease. The aim of AFP surveillance is to detect polio virus transmission, and the earlier the stool is collected, the greater the chance of detecting polio virus. WHO recommends the immediate repoing and investigation of every case of AFP in children less than 15 yrs (As AFP in a person > 15 yrs is unlikely to be polio. Still, AFP surveillance must be flexible enough to repo any case of AFP in an adult, if suspected to be due to poliomyelitis) Cases ofAFP are classified as Polio if : Wild polio virus is isolated from any stool specimen. Cases of AFP without isolation of wild polio virus may be classified as 'polio compatible' if : Stool specimens were inadequate and Residual weakness was present 60 days after onset of paralysis or 60-day follow-up was not done (due to death or absence) and 'Expe review' concludes that these cases could not be discarded as 'non-polio' based on available data.