explain the role of vectors in the transmission of disease?

Question

vectors can be like disease carriers how

Answer 1

Vectors are organisms that provide a pathway for a pathogen to be transmitted between animals and humans or other animals. Normally, these transfer organisms provide this transport by the means of blood-sucking (ingest the bacteria/virus/parasite from the infected host during feeding and then inject it into another organism while feeding once again). The vector shows some immunity to the pathogen, allowing for the successful transport of the disease. It is also quite common to find specific vector-disease relationships in nature - in other words, not every vector can carry every pathogen. Also, ecological restraints also limit the dispersal of certain disease due to the inability for the vector to sustain itself in different environments.

Examples include plasmodium, mosquitoes, and ticks.

Answer 2

Vectors are organisms that provide a pathway for a pathogen to be transmitted between animals and humans or other animals. Normally, these transfer organisms provide this transport by the means of blood-sucking (ingest the bacteria/virus/parasite from the infected host during feeding and then inject it into another organism while feeding once again). The vector shows some immunity to the pathogen, allowing for the successful transport of the disease. It is also quite common to find specific vector-disease relationships in nature - in other words, not every vector can carry every pathogen. Also, ecological restraints also limit the dispersal of certain disease due to the inability for the vector to sustain itself in different environments.

Answer 3

Vectors are intermediate hosts. For example, the mosquito. It takes a blood meal from an infected animal...the parasite begins the life cycle in the mosquito..yet the mosquito doesn't get sick. It then bites another animal, releases the parasite and thats how it's done.