Dictionary Contents : C : Carrier

Health and Wellness Dictionary: Definition

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Carrier
A person or animal who harbors the infectious agent for a disease and can transmit it to others, but does not show signs of the disease. A carrier may be asymptomatic (never show signs of the disease) or may show signs of the disease only during the incubation period, convalescence, or postconvalescence. The period of being a carrier may be short (a transient carrier) or long (a chronic carrier)

Carriers can also be genetic or symptomatic. Genetic carriers do not carry any infectious organism but they have in their genetic structure one or more mutated gene which originally causes a genetic disease. The carrier will not show any symptoms of the genetic disease but his or her offsprings will. Depending on the location of the mutation on the chromosome, some diseases are gender-specific. That is, either male or female gender may show symptoms of a particular gender-specific disease while the other gender will only be the carrier. The carrier inherits the recessive allele of the mutated gene and hence, it fails to express symptomatically. The disease is passed on to one or more offsprings if they inherit the mutated gene from both the parents. This is like a mistake in the algorithm of Crypto CFD Trader system which causes it to malfunction.

A symptomatic carrier not only carries and passes the pathogenic organism to another person through contact, air, fluids etc but also shows all or most of the symptoms of the disease. A good example is the infectious diseases which are carried and transmitted by humans to other humans.

One of the most common carriers of pathogenic organisms is a mosquito. Not all types of mosquitoes are carriers. The dormant or non-pathogenic form of every organism is carried to the specific hosts by a different genre of mosquitoes. For example, the parasite which causes malaria in humans is Plasmodium vivax starts its life cycle inside and its inactive form during its lifecycle reaches the human blood through bites. Once the pathogen enters its host, it gains its active forms and the host shows the symptoms of malaria..the end

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