Polio, or poliomyelitis, is a crippling childhood disease caused by the poliovirus, and preventable through immunisation.
The last case of acute poliomyelitis reported in Venezuela dates back to 1989, a former health minister, Jose Felix Oletta, told AFP.
According to the organization, the diagnosed child has not been vaccinated and lives in a particularly poor area in Delta Amacuro state.
Polio, which can only be prevented through immunization, has been found again in a Venezuelan child according to the Pan-American Health Organization (PAHO).
Oletta added that the virus affects those people who live in conditions of malnutrition and are not vaccinated. The former Venezuelan Minister of Health claims that President Nicolas Maduro's current health officials took over a month to notify PAHO of the polio case, despite an global rule requiring notice within 24 hours.
Out of the other 11 countries to have reported Polio cases, Venezuela not only stood at top most position with majority cases but has also recorded 35 death cases due to the disease since mid 2017, said the organisation.
As per the report, most of the neighbouring states, where people from Venezuela have migrated due to the political and social crisis, have also reported cases of polio among the Venezuelan immigrants.
In neighbouring countries, where Venezuelans have migrated due to grim economic conditions, numerous reported cases have been among Venezuelan immigrants, the report said.
Venezuela says it does not have 85 percent of the basic medical supplies it needs even including vaccines.
The government on April 6 launched a new vaccine campaign against 14 diseases including measles and TB.