TAMU ENTO 210 - Final Exam Study Guide (19 pages)

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Final Exam Study Guide



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Final Exam Study Guide

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A study tool for the material from lectures 17-24, and brief summaries of the required reading.


Pages:
19
Type:
Study Guide
School:
Texas A&M University
Course:
Ento 210 - Global Public Health Ent
Global Public Health Ent Documents

Unformatted text preview:

ENTO 210 1st Edition Final Exam Study Guide Lectures 17 24 Lectures 17 Sandflies and Leishmaniasis Leishmania a genus of Trypanosomatidea like Chagas and Sleeping sickness considered a Neglected Tropical Disease NTD Sandfly is the vector 2nd most important protozoan medically and economically a few are almost entirely human very common 70 000 500 000 deaths annually Leishmania life cycle involves promastigotes and amastigotes fly bites human and injects promastigotes promastigotes change to amastigotes inside the macrophages of the human the amastigotes in the macrophages multiply and taken up in a blood meal by the sandfly they change to promastigotes in the midgut of the sandfly and migrate to the proboscis where they are injected into another human Leishmaniasis Transmission sandfly bites are the most common it can also pass mother to fetus and through blood transfusions Sandfly diptera psychodidae phlebotominae almost 1000 species about 70 carry human disease important genera Phlebotomus old world sand fly semiarid conditions seasonal cutaneous leishmaniasis visceral leishmaniasis and mucocutaneous leishmaniasis which is the rarest Lutzomyia new world sand fly forest conditions regularly present cutaneous leishmaniasis visceral leishmaniasis and mucocutaneous leishmaniasis females usually nocturnal feeders larvae not commonly found total life cycle is 30 60 days some are endophagic adults are weak flyers and usually stay close to home Cutaneous Leishmaniasis causes a pizza like lesion usually scars 90 of cases occur in the Middle East and some of South America most people get in childhood scars can cause social issues in some cultures abandonment etc at one point they would infect children in a place not very visible so they would get it over with and not risk persecution maintained in rodents hyraxes and dogs some systemic drugs work many are expensive Mucocutaneous Leishmaniasis Espundia 90 in South America mostly caused by L brasiliensis usually starts with



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