Parasitic Diseases

Parasitic Diseases


diseases of man and animals caused by infection with unicellular protozoans, worms, ticks, and some arthropods. Depending on the type of causal agent, parasitic diseases are divided into the protozoiases (causal agents, protozoans), helminthiases (worms), acariases (ticks), and entomiases (insects). The causal agents may live on the body surface (ectoparasites) or within the body of man or animals (endoparasites). The most widespread protozoan diseases are malaria, toxoplasmosis, trypanosomiasis, amebiasis, lambliasis, coccidiosis, trichomoniasis, and leishmaniasis. Of the helminthiases the most common are ascariasis, trichinosis, enterobiasis, ancylostomiasis, filariasis, dracunculiasis, taeniasis, hymenolepiasis, diphyllobothriasis, opisthorchosis, schistosomiasis, and echinococcosis; altogether more than 200 diseases are caused by worms. Scabies, myiasis, and pediculosis are well known acariases and entomiases.

The sources of parasitic diseases are organisms, called hosts, which carry the causal agent, either in a diseased state or as parasite vectors. The hosts of parasitic diseases may be man (anthroponoses) or animals (zoonoses), and the diseases may be transmitted by contact, for example, with a sick person or a horse, as in scabies, by swallowing the causal agent or its eggs, as in ascariasis and amebiasis, or by penetration of the larvae through injured skin, as in ancylostomiasis and strongylosis. The causal agents of certain parasitic diseases, such as leishmaniasis and malaria, are transmitted by arthropod vectors.


Pavlovskii, E.N. Rukovodstvo po parazitologii cheloveka, vols. 1–2. Moscow-Leningrad, 1946–48.


References in periodicals archive ?
As a result, emerging parasitic diseases such as Zika and Chikungunya have assumed endemic proportions.
Among those died from some infectious and parasitic diseases, a significant proportion are killed from tuberculosis (more than 50%) and mainly at working age.
Theme of the conference will cover all the major areas of parasitology and related to parasitic diseases of veterinary and public health importance, diagnostic chemo-prophylaxis, anti-parasitic and vaccines of parasites, zoonotic parasitic diseases and vector-borne diseases and role of veterinarians under one-health concept epidemiology.
No new cases have been reported in the neighborhood in Plovdiv in the last week, Todor Kantardzhiev, the director of the National Center for Contagious and Parasitic Diseases, announced on Monday before the Bulgarian National Television.
It is one of five parasitic diseases targeted by the Centers for Disease Control and Prevention for public health action.
They will work to develop treatments for parasitic diseases including visceral and cutaneous leishmaniasis and Chagas' disease over the next five years.
Those factors can promote the spread and amplify the global burden of key parasitic diseases, including malaria and lymphatic filariasis, as well as the neglected parasitic diseases, including Chagas disease, cysticercosis, and toxoplasmosis in resource-poor settings.
This laboratory now resides in the Parasitic Diseases Branch in the Division of Parasitic Diseases and Malaria within the Center for Global Health.
GlobalData's clinical trial report, "Parasitic Diseases Global Clinical Trials Review, H2, 2015" provides an overview of Parasitic Diseases clinical trials scenario.
On Monday, however, three scientists from Japan, China and Ireland, whose discoveries have led to the development of potent new drugs to fight parasitic diseases such as malaria and elephantiasis, won the Nobel Prize for Medicine.
William Campbell, Satoshi Omura and Youyou Tu jointly won the 2015 Nobel Prize for medicine for their work against parasitic diseases, the award-giving body said on Monday.