They mask their identities to avoid harassment and violence in Congo, where the epidemic is spreading at the fastest rate since it started in August - and where rampant misinformation fuels a distrust of outsiders in medical garb.
The World Health Organisation (Who) has logged 119 attacks this year against health workers. Eighty-five have been wounded or killed.
Fear is changing tactics among aid staffers, who set out to convince communities that Ebola is real and they were there to help end it.
Now some downplay their mission in public, swapping white coats for street clothes and SUVs for motorbikes that blend into traffic.