Filariasis is a common public health problem in various regions of Indian subcontinent. There are many reports describing detection of microfilaria in different organ systems. There are limited number of reports available describing the presence of microfilaria in bone marrow. Here we report a young patient who developed aplastic anaemia following varicella infection. Peripheral blood and bone marrow showed many microfilariae of Wuchereria bancrofti. There are no reports describing this unique combination in the available literature.