'A question of time': experts fear Balkans measles outbreak

Despite vaccinating her first child, Vanja drew a line when it came time to inoculate her second and decided he would not be receiving the measles shot.

The 44-year-old psychologist living in Montenegro's capital Podgorica gave a host of reasons why she changed her mind, all after binging on a deluge of information shared in an online group she belongs to. 

"I don't trust the vaccination system. We lack information and education," Vanja told AFP, asking that her surname be withheld.

"I feel great responsibility and it wasn't a simple and easy decision to make."