Uganda, April 7 -- Yellow fever mass vaccination campaign has unmasked the rise in vaccine hesitancy in the country, a vice health experts warn could increase risks of outbreak of vaccine-preventable diseases.

Following the April 2 start of the mass vaccination against yellow fever, a contagious disease which the World Health Organisation (WHO) says is endemic in Uganda, a growing number of parents-many using social media to express their views-are saying they don't trust the vaccine, its safety and the motive behind the campaign.

However, data from the Health ministry also indicates that there is a general increase in the number of children who have never gotten other essential vaccines.

Dr Ombeva Malande, a vaccinologist at the minis...