Doctors Without Borders embark on vaccination campaign to combat outbreak . ( CNN ) -- Vaccinations being done in Nigeria , Chad , Nigeria , where 5.4 million cases reported . Over 1,900 people have been treated , vaccinated ; 1.7 million more to be vaccinated . Over 1,900 people have died in this outbreak since January .
Doctors Without Borders embark on vaccination campaign to combat outbreak . Vaccinations being done in Nigeria , Chad , Nigeria , where 5.4 million cases reported . Over 1,900 people have been treated , vaccinated ; 1.7 million more to be vaccinated . Over 1,900 people have died in this outbreak since January .