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Biology CBSE Live product
Class 8 (2025-26)
Health: The ultimate treasure
Preventing and controlling diseases
10.
Vectorborne diseases
Question:
5
m.
Determine the disease and answer the following questions
Malaria
Dengue
Kala azar (leishmaniasis)
Filariasis
Plague
is a disease caused by the
parasite Plasmodium
Yersinia pestis
Leishmania donovani
Wuchereria bancrofti
dengue virus
which mainly infects the
lymphatic system and blocks the normal flow of lymph
blood and liver after entering the body through the skin
red blood cells and the liver after the parasite enters through the skin
lymph nodes and can also affect the lungs
spleen, liver, and bone marrow
. It is characterized by symptoms such as a
recurring fever with chills, excessive sweating, body weakness, and in severe cases, organ complications
high fever, swollen and painful lymph nodes (called buboes), and extreme weakness
prolonged fever, severe weight loss, weakness, and enlargement of the spleen and liver
severe swelling, especially in the legs and genitals, a condition commonly known as elephantiasis
high fever with chills, severe body aches, sweating, weakness, and in some cases bleeding gums or rashes
. Prevention can be ensured through
using mosquito nets during sleep, applying insect repellents, and draining stagnant water to stop mosquito breeding
sleeping under mosquito nets, applying insect repellents, and draining stagnant water to prevent mosquito breeding
controlling sandfly populations, using insecticide spraying, protective nets, and ensuring early diagnosis and treatment
mosquito populations, avoiding mosquito bites, and taking preventive drug treatments under health programs
controlling rat and flea populations, maintaining proper sanitation,
and improving public health awareness to avoid outbreaks.
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