In Madagascar, one of the poorest nations in the world, an outbreak began in September 2018, and at least 117,075 cases of the disease have been reported by the nation's health ministry as of last month.
The most recent outbreaks appears to have originated from travelers who visited countries experiencing outbreaks of the disease, including Israel, the Philippines and Ukraine.
The number of confirmed cases of measles in the United States this year jumped by almost 20 percent in the week ended April 11, in the country's second-worst outbreak in almost two decades, federal health officials reported on Monday.
"There were far fewer active cases of measles than 250", the lawsuit said. Most of the cases are children under 18 and have been reported from Williamsburg and Borough Park, Brooklyn.
For the third week in a row, US health officials have added dozens of new reports to the year's list of confirmed measles cases, bringing the total to 555 - already the highest number in the past five years. "Getting MMR vaccine is much safer than getting measles, mumps or rubella", the CDC said.
Health officials say there are two main reasons for the virus's surge: more global travel and lower vaccination rates.
On Monday, the World Health Organization (WHO) also released a report stating that the number of reported global cases of measles has increased by 300 percent in the first few months of 2019, in comparison to the same period of time a year ago.
"Spikes in case numbers have also occurred in countries with high overall vaccination coverage, including the United States", WHO said.
"By the time you finish reading this, we estimate that at least 40 people - a lot of them children - will be infected by this fast-moving, life-threatening disease", Henrietta Fore, executive director of UNICEF and Dr. Tedros Adhanom Ghebreyesus, director general of the World Health Organization, wrote in an opinion piece Monday on CNN.
The mistaken belief can be traced back to 1998, when a doctor in the United Kingdom published a now discredited study claiming the MMR vaccine was linked to autism.
Claims about health risks from vaccines are "based purely on fabrication", he continued.
Measles can cause serious long-term harm, to individuals and to the economy.
In an opinion piece for CNN, WHO heads Henrietta Fore and Tedros Adhanom Ghebreyesus said the world was "in the middle of a measles crisis" and that "the proliferation of confusing and contradictory information" about vaccines was partly to blame.
"We eliminated measles from this country in 2000, and".
The measles virus is highly contagious and can lead to complications and death, particularly in children.
About 1 out of every 1,000 children who gets measles will develop encephalitis or swelling of the brain, according to the CDC.
Measles can also cause pregnant women to give birth prematurely or have a low-birth-weight baby.