America, Europe and the Eastern Mediterranean experienced the largest increases in cases, with the Western Pacific being the only region where the incidence of measles dropped.

Measles cases jumped by more than 30% worldwide last year compared to 2016, killing 110,000 people, said WHO on Thursday, which warns of the resurgence of this highly contagious disease.

Due to gaps in immunization coverage, measles outbreaks have occurred in all regions, according to a report by the World Health Organization (WHO), which presents the trends in measles over the last 17 years.

"The number of reported cases of measles reached a peak in 2017, with several countries having experienced severe and prolonged outbreaks of the disease," the WHO said in a statement.

"We are in the process of regressing"

"What is even more disturbing than the increase in the number of reported cases is that we are seeing sustained transmission of measles in countries that have not had measles transmission for several years," he said. media Martin Friede, who heads the WHO Vaccine Department.

"This suggests that we are regressing," he said, lamenting growing mistrust of vaccines, which anti-vaccine groups have accused of causing autism.

"There is a risk of destroying decades of progress "

"Without rapid efforts to increase immunization coverage and identify populations with unacceptable levels of under- or no-immunization among children, decades of progress in child protection is likely to be lost. communities against this devastating but perfectly preventable disease , " said Dr Soumya Swaminathan, WHO's Deputy Director General for Programs.

Measles is a serious and highly contagious disease that can be prevented by two doses of a "safe and effective" vaccine, according to WHO.

False information, relaxation of vigilance ...

For Dr. Seth Berkley, Executive Director of the Gavi Alliance, this increase in cases is not surprising.

He points to the "spread of false information on the vaccine" in Europe and the "relaxation of vigilance with regard to the disease" in this region, but also the "collapse of the health system" in Venezuela and the " low immunization coverage " in Africa.

Measles can cause debilitating and even fatal complications, including encephalitis, pneumonia and permanent vision loss. The risk of death and complications is particularly high in infants and young children who are malnourished or have weakened immune systems.