Varicella outbreak in Sudanese refugees from Calais

We describe an outbreak of varicella in 31 Sudanese refugees (all except one were male, mean age: 26 +/- 1), from the Calais migrant camp and sheltered in a French transit area. The attack rate was 39%. Adults are scantly immunized against varicella zoster virus in East Africa and may be exposed to epidemics once in France.