How is leishmaniasis controlled?
Spray living/sleeping areas with an insecticide to kill insects. If you are not sleeping in a well-screened or air-conditioned area, use a bed net and tuck it under your mattress. If possible, use a bed net that has been soaked in or sprayed with a pyrethroid-containing insecticide.
What is the vector for leishmaniasis?
The causative agent of leishmaniasis is transmitted from man to man by a tiny insect called sandfly. Approximately, 600 species of sandflies are known but only 10% of these act as disease vectors. Further, only 30 species of these are important from public health point.
Which representative of Diptera is the vector of leishmaniasis?
Background: Phlebotomine sand flies (Diptera: Psychodidae) are vectors of Leishmania species, the etiological agents of leishmaniasis, which is one of the most important emerging infectious diseases in the Americas.
How kala azar was eliminated from a highly endemic district in Bihar?
All 16 blocks of the Vaishali District achieved the VL elimination target in 2016. The integrated VL control strategy helped reduce the number of VL cases from 664 in 2014 to 163 in 2016 and the number of endemic villages from 282 in 2014 to 142 in 2016.
How do you control sandflies?
Measures used to control adult sandflies (Lutzomyia and Phlebotomus) include the use of insecticides (mostly pyrethroids) for residual spraying of dwellings and animal shelters, space-spraying, insecticide-treated nets, impregnated dog-collars and personal protection through application of repellents/insecticides to …
Who is the vector of kala azar?
Disease is caused by protozoan parasite Leishmania donovani. Phlebetomus argentipes (sand fly) is the vector transmitting Visceral Leishmaniasis (Kala-azar) in India.
What is the causative agent of leishmaniasis?
Causal Agent: Leishmaniasis is a vectorborne disease that is transmitted by sand flies and caused by obligate intracellular protozoa of the genus Leishmania. Human infection is caused by more than 20 species. These include the L. donovani complex with 2 species (L.
What is vector and reservoir?
RESERVOIR: The animal or organism in which the virus or parasite normally resides. VECTOR: Any agent, living or otherwise, that carries and transmits parasites and diseases. Also, an organism or chemical used to transport a gene into a new host cell.
Where do sand flies lay eggs?
Sand fly adult females lay from about 30-70 eggs that are laid singularly in small batches on moist surfaces like soil in protected areas with high humidity and high organic matter. Eggs typically hatch about two weeks after being deposited.
Where are sandflies found in the world?
Species of this genus are found only in the New World, with a distribution ranging from the southern areas of the Nearctic region throughout the Neotropical ecozone. Sandflies are found mainly in forest areas in Central and South America.
Is India free from kala-azar?
India has already missed the kala-azar elimination target thrice in the last decade. The initial deadline set by the National Health Programme (now NHM) was 2010, which was pushed to 2015 in the 12th Financial Plan Document. This deadline was later extended twice — to 2017, and then to 2020.
Is kala-azar eradicated from India?
The eradication of kala azar in India is achievable and there are favorable circumstances for doing so. Humans are the only reservoir host in this region for the parasite causing the disease. The only way the disease spreads from human to human is by one insect in the region, Phlebotomus argentipes.
How can integrated vector management be used to control leishmaniasis?
Well implemented vector control through integrated vector management can play an important role in the elimination and control of leishmaniasis. The approach involves: Combined use of safe and cost–effective vector control tools and methods targeting leishmaniasis along with other co-prevailing vector-borne diseases.
What is the pathophysiology of human leishmaniasis?
Human Leishmaniasis encompasses multiple clinical syndromes, most notably visceral, cutaneous, and mucosal forms. Infections can result in two main forms of disease, cutaneous leishmaniasis and visceral leishmaniasis (kala-azar).
How is Leishmania (Viannia) panamensis amastigotes (Leishmania) diagnosed?
Figure B: Leishmania (Viannia) panamensis amastigotes in a Giemsa-stained tissue scraping. Identification to the species level is not possible based on morphology and other diagnostic techniques such isoenzyme assay or PCR are needed.
How long does it take to diagnose leishmaniasis?
Diagnostic identification of Leishmania using this approach may take several weeks. Antibody detection can prove useful in visceral leishmaniasis but is of limited value in cutaneous disease, since most patients do not develop a significant antibody response.