Acanthocephaliasis

African trypanosomiasis

Amblyomma americanum

Amblyomma spp.

Amebiasis

American trypanosomiasis

Ancylostoma braziliense

Ancylostoma caninum

Ancylostoma duodenale

Ancylostomiasis (Hookworm)

Angiostrongyliasis

Angiostrongylus cantonensis

Angiostrongylus costaricensis

Anisakiasis

Anisakis simplex

Ascariasis

Ascaris lumbricoides