Acanthocephaliasis

African trypanosomiasis

Amblyomma americanum

Amblyomma spp.

Amebiasis

American trypanosomiasis

Ancylostoma braziliense

Ancylostoma caninum

Ancylostoma ceylanicum

Ancylostomiasis (Hookworm)

Angiostrongyliasis

Angiostrongylus cantonensis

Angiostrongylus costaricensis

Anisakiasis

Anisakis simplex

Artifacts

Ascariasis

Ascaris lumbricoides