polio

Last year, a polio outbreak in Deir ez-Zor raised concerns throughout the region about the spread of an epidemic.

Then Cutter Laboratories in Berkeley, California, made a bad batch of vaccine, and 40,000 children were sickened with polio.

Fifty-eight children took part in a trial into polio and diptheria vaccines in December 1960.

Either way, part of the tragedy and poignancy of polio is its preferential spread to babies and toddlers.