Disease Transmission and Vectors Flashcards

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What does disease transmission mean?

It means how a pathogen spreads from one infected host to another host.

A vector is a living organism that carries a pathogen from one host to another.

They can spread by touching the skin of an infected person and by sexual contact.

They can spread in contaminated water and in food that has not been cooked or stored safely.

It is when pathogens in tiny drops from coughs or sneezes are breathed in by another person.

Female Anopheles mosquitoes act as vectors that pass the malaria pathogen to humans.

Mosquito nets act as a barrier that stops mosquitoes biting people while they sleep.

Aphids are insect vectors that spread plant viruses, such as tobacco mosaic virus.

Direct transmission goes straight from one host to another; indirect uses a vector, surface or the air in between.

You can use insecticides or repellents, and remove standing water where insects breed.