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What is the role of the vectors in the transmission of disease?
Vectors play very important role in spread of many diseases. The microorganism spends dominant or recessive stage of it's life cycle. Without the vector the disease can not spread in most of the cases. Malaria and plague are two important vector born diseases.
What is the relationship between a reservoir and a vector in the context of disease transmission?
In the context of disease transmission, a reservoir is a place where a pathogen can live and multiply, such as an animal or environment. A vector is an organism that can carry and transmit the pathogen from the reservoir to a host. The relationship between a reservoir and a vector is that the reservoir provides a source of the pathogen, while the vector helps spread the pathogen to new hosts, contributing to the transmission of the disease.
What is biological vector?
A biological vector is an organism, such as an insect or a rodent, that transmits pathogens from one host to another. These vectors can play a significant role in the spread of infectious diseases among populations.
Does the viroid prion virus or the vector cause mad cow disease?
Mad cow disease, also known as bovine spongiform encephalopathy (BSE), is caused by prions. Prions are abnormal proteins that can cause normal proteins in the brain to become misshapen, leading to neurodegeneration. The disease can be spread through contaminated meat consumption.
Which of these is a tree disease spread by beetles?
Dutch Elm disease is a tree disease that is spread by beetles. It is caused by a fungus carried by elm bark beetles, which feed on the bark of elm trees, introducing the disease into the tree's vascular system.
What is Role of spreading vector disease?
what is the role of a vector in the spread of a disease
What is vector spread disease and the examples?
A disease which is carried and spread by an agent (animal or microorganism) is a vector spread disease. Eg. Mosquitoes are the vectors for malaria.
The spread of a disease by the bite of a certain mosquito is known as?
vector-borne transmission
What is the role of the vectors in the transmission of disease?
Vectors play very important role in spread of many diseases. The microorganism spends dominant or recessive stage of it's life cycle. Without the vector the disease can not spread in most of the cases. Malaria and plague are two important vector born diseases.
What animal causes plague?
It was a bacterium that caused it, but rats and fleas between them were the vector which spread the disease.
Does tetanus have a vector?
Tetanus is a disease which can affect any mammal, and mammals spread the disease to other mammals by biting them; hence the vector is mammals. Dogs, foxes and bats are the most usual mammals to be involved.
Is malaria a coomunicable disease?
Malaria is not communicable between people. It is a vector borne disease that is spread by the female Anopheles mosquito between dawn and dusk.
What is the relationship between a reservoir and a vector in the context of disease transmission?
In the context of disease transmission, a reservoir is a place where a pathogen can live and multiply, such as an animal or environment. A vector is an organism that can carry and transmit the pathogen from the reservoir to a host. The relationship between a reservoir and a vector is that the reservoir provides a source of the pathogen, while the vector helps spread the pathogen to new hosts, contributing to the transmission of the disease.
What is vector of diarrhea?
The vector is how the illness is spread. In cholera's case, the vector is contaminated water. That is how cholera is spread.
What is a xenodiagnosis?
A xenodiagnosis is a diagnosis of an infectious disease by exposure to a vector of that disease, incubating the vector and examining it for the presence of that disease.
Is malaria communicable or non-communicable?
Malaria is a vector based disease and is considered highly communicable, meaning it can be spread, though not easily from human to human. a vector is an organism that does not cause disease itself but which spreads infection by conveying pathogens from one host to another.
Why don't vectors contract the disease they carry?
To start.. the reason is evolution, based on the selective pressures that favor the vector's survival. This is not a conscious decision or planned strategy of the bacteria/virus/vector, it is what worked the best and spread the most quickly. What works best has the best reproduction rates and is therefore the most abundant and over time dominates the other strains of a disease. ok. here is the reason and the explaination. Well, the vectors do contract the disease, some human diseases seem to not affect the vector and others will affect the vector especially behavorally (look at rabies). But usually the vector is an insect and the the reason it doesn't affect the life of the vector is understadable. In short, if the disease killed or greatly harmed the main source of distribution it would die out quickly, by leaving the vector relatively unharmed the disease itself has a greater chance to be spread and to reproduce in acceptable areas. The selective pressures involved with high reproduction rates will surely favor those diseases that keep their hosts alive to spread, it can reproduce high amounts inside the human but does not need to in the mosquito and it would make the reproduction of the disease and range of the vector significantly lower. more specific.. When the bacteria or virus is in the vector it is at a different time of the bacteria/virus' lifecycle that allows the vector to live a somewhat normal life. Using malaria as an example... The gametes which are haploid are taken into the mosquito and fuse once in a suitable environment (the mosquito gut in this case) to form a diploid zygote (ookinete)this is the next step in the diseases' life cycle. Now the fused structure burrows into the lining of the gut to migrate to the salivary glands and multiply. Once the mosquito bites another host then the disease is injected with other proteins created by the mosquito intended to keep the wound from closing while feeding. The vector stays alive long enough to spread the disease, and now the disease can multiply rapidly in the human and spread to other mosquitos and then other humans. The mosquito is necessary to the survival and spread of the disease, where as humans are not needed to spread the disease amongst themselfs so it is benefical to reproduce rapidly at the expense of killing the host (because the offspring will be spread even if the host dies).
