The American Heartworm Society. Information on all aspects of heartworm including guidelines for the diagnosis, prevention and management of heartworm infection in dogs and cats.
In some European countries (especially France, Italy and Belgium) the study of fungal species is usually associated with that of other eukaryotic parasites (protozoas, insects, mites and helminths).
MedlinePlus, US National Library of Medicine
United States Centers for Disease Control and Prevention. General information on all parasites and parasitic disease, includes image library.
Liverpool School of Tropical Medicine. Information on a range of parasites (helminths, protozoa, vector and tick transmitted parasites), includes details of life cycles, clinical signs, diagnostics and therapy with images. Mainly applicable to Europe.
The Merck Veterinary Manual. General information on all disease of large and small animals, including exotics and birds. Indexed by physiological sysytem. Parasitic information includes etiology and transmission, clinical findings, diagnosis, treatment and control with some images.
Pacific Medical Training. Information on dengue fever.