In all, 53 people have died since late October. Most of those who have died have been babies and young infants, including 23 babies aged under 12 months and another 25 children aged between 1 and 4 years.
Growing scepticism of vaccines in Europe, especially in countries like France should be a cause for concern.
The motive for the murder in the town of Lwemba in the troubled Ituri region was unknown, but it came as health authorities were set to introduce a new vaccine against the disease in unaffected areas.
Pakistan, Afghanistan and Nigeria are the only countries in the world, where polio is endemic. And in contrast to recent years of gradual improvement, this year there have been at least 72 cases of polio in Pakistan after only eight in 2018.
Globally, nearly three times as many measles cases were reported from January to July this year than in the same period in 2018, the WHO said.
More than 1,800 people have died in eastern Democratic Republic of Congo since Ebola broke out there in August last year.
Turkey has "spent $123.34 million with the largest and the most technologically advanced industrial investments up until now in Turkey's pharmaceutical industry," the deputy health minister says.
Democratic Republic of Congo recorded 2,382 cases of Ebola, of which 1,606 were fatal, the Health Ministry says.
A third of French citizens think immunisation is unsafe, according to figures. Globally, 79 percent of people agreed that vaccines are safe and 84 percent said they were effective.
A World Health Organization expert says the UN body expects continued "intense transmission" of Ebola virus in Congo with community mistrust being a major issue in some areas.
After more than three decades in development and almost $1 billion in investment to prevent malaria, which kills hundreds of thousands, the most advanced vaccine yet has been rolled out in Malawi's capital Lilongwe.
A total of 555 cases of measles have been recorded in the United States since January 1 with an Orthodox Jewish community in New York City being hardest hit who were infected by visitors from Israel, where a measles outbreak began a year ago.
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