The father says the bullying began soon after his two sons arrived at their New York City school from Senegal almost one month ago.

They were called “Ebola” by other students, taunted about possibly being contagious and excluded from playing ball. Ousmane Drame says the baiting finally erupted into a physical fight on Oct. 24 when 11-year-old Amadou and his 13-year-old brother Pape were pummeled by classmates on the playground of Intermediate School 318 in the Bronx.

The brothers’ experience is an extreme example of the backlash felt by some Africans in the U.S. since the Ebola virus arrived from West Africa. Many others tell of facing subtler, but no less hurtful, forms of discrimination at work, in school and as they commute as fear of the little-known but often deadly disease has spread among the public.