Cameroon has set a target of 120 days to contain polio outbreak, with plans to vaccinate 122,225 children under five years old.
In May the Ministry of Health announced that a wild polio virus was found in Mada and Makari health districts in northern Cameroon.
Laboratory results indicate that it was similar to one found in Nigeria in 2018, says the World Health Organization.
The WHO has said the situation is critical.
To contain the polio virus, Cameroon has set vaccination days and health workers are going door to door informing people.
What is polio?
Polio, or poliomyelitis, mainly affects children aged under five
It is a highly infectious disease caused by a virus. It invades the nervous system and can cause total paralysis in a matter of hours
Initial symptoms include fever, fatigue, headache, vomiting, stiffness of the neck and pains in the limbs
One in 200 infections leads to irreversible paralysis. Among those paralysed, 5% to 10% die when their breathing muscles become immobilised.