Diseases like malaria, dengue and chikungunya are spread by mosquitoes. These insects carry germs from sick people and infect others when they bite. Using nets and repellents helps stop these vector-borne diseases.
Class 8 Science Grade 8 Chapter 3 Health: The Ultimate Treasure question answer
Class 8 NCERT Science Curiosity Chapter 3 Health: The Ultimate Treasure solutions
Some diseases are spread by insects called vectors. Mosquitoes spread malaria, dengue and chikungunya. Houseflies can spread germs from garbage to food, causing stomach infections. Insects pick up pathogens from infected persons or dirty areas and pass them through bites or contact. Preventing such diseases includes using mosquito nets, applying repellents, covering water tanks and keeping surroundings clean. Controlling insect breeding helps reduce these infections in the community.
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