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The soil-transmitted helminths (also called geohelminths) are a group of intestinal parasites belonging to the phylum Nematoda that are transmitted primarily through contaminated soil. They are so called because they have a direct life cycle which requires no intermediate hosts or vectors , and the parasitic infection occurs through faecal ...
The World Health Organization estimates that globally more than 1.5 billion people (24% of the total population) have a soil-transmitted helminth infection. [2] Over 270 million preschool-age children and over 600 million school-age children live in areas where these parasites are intensively transmitted, and need treatment and preventive ...
Some types of helminths and protozoa are classified as intestinal parasites that cause infection—those that reside in the intestines. These infections can damage or sicken the host (humans or other animals). If the intestinal parasite infection is caused by helminths, the infection is called helminthiasis.
Another source estimated a much higher figure of 3.5 billion infected with one or more soil-transmitted helminths. [ 65 ] [ 66 ] In 2014, only 148 people were reported to have dracunculiasis because of a successful eradication campaign for that particular helminth, which is easier to eradicate than other helminths as it is transmitted only by ...
WHO have since 2001 had a strategy for control of soil-transmitted helminths, including whipworms. This strategy entails treating at-risk individuals in the endemic areas. Risk groups for whipworm infections are children at preschool and school-aged children, people with specific high-risk jobs, women in reproductive and pregnant and ...
About 0.8 to 1.2 billion people globally have ascariasis, with the most heavily affected populations being in sub-Saharan Africa, Latin America, and Asia. [1] [10] [11] This makes ascariasis the most common form of soil-transmitted helminthiasis. [10] As of 2010 it caused about 2,700 deaths a year, down from 3,400 in 1990. [12]
sexually transmitted infection – only trophozoite form (no cysts) Sleeping sickness: Trypanosoma brucei: brain and blood microscopic examination of chancre fluid, lymph node aspirates, blood, bone marrow 50,000 to 70,000 people; only found in Africa tsetse fly, day-biting fly of the genus Glossina: Chagas disease: Trypanosoma cruzi
The cost of treating a child for infection of soil transmitted helminths and schistosomes costs different amounts in different countries when administered as part of mass school-based deworming, but Evidence Action states that their recent programmes cost $0.56 or less per child per dose. [6]