Babesia microti

Babesiosis

Balantidiasis

Balantidium coli

Bancroftian filariasis

Balamuthia mandrillaris

Baylisascariasis

Baylisascaris procyonis

bed bugs

Bilharziasis (Schistosomiasis)

Blastocystis hominis

bot flies

Brugia malayi

Brugia timori