Definition of avidity - What it is, Meaning and Concept

The notion of avidity has its origin in avid .This adjective (avid), from the Latin word avĭdus , qualifies one who is ambitious or who is eager for something .

For example: "I was always hungry to know other countries" , "The greed for wealth can be healthy, but you don't have to be greedy" , "Although the team was already winning four to zero, the Uruguayan striker continued to show his greediness" .

It can be said that greediness is the desire that a person has to get something.If we refer to the first example mentioned above, greediness is the desire that the subject in question has to visit different nations.In the second example, greediness is associated with the money ambition , which can function as an incentive to work hard and, in turn, lead to morally condemnable behaviors.Finally, the third example is linked to the appetite of a player who wants to continue scoring goals beyond the triumph of his team has already been defined.

Having greediness is not positive or negative in itself : it is a circumstance or a state that can be used to develop different kinds of actions Avidity of knowledge can make a person read a lot, conduct workshops or take a career.In this case, greed is very valuable, but if the desire to have a lot of money leads a subject to steal or get involved in illicit business, it can be argued that his greed was negative for her and her surroundings.

The reading is one of the activities that are usually linked to greediness, when there is a great passion that does not allow the subject to detach from their favorite books.In this context it is possible to talk about reader avido , and should not be confused with someone who simply feels like reading, but is about who can not live without it.

In the field of medicine, this term also has a meaning, more precisely when talking about toxoplasmosis, an infection that originates from the endocellular parasitic protozoan known as Toxoplasma gondii .The clinical manifestations of this infection they present a great variety and one of the values ​​that doctors must find out to make a proper diagnosis is the avidity of the antibody , that is to say the strength of their union with multivalent epitopes, which can last for several years.

Measuring the avidity of the antibody is especially useful and for this there is the so-called avidity test .The initial response to infection is carried out with a very low avidity antibody, and this results to an easy dissociation of antigen binding.On the other hand, a high index serves to rule out a toxoplasmosis infection that has taken place in the last four months.

Since From the point of view of medicine, the procedure of this test does not present a marked complexity.Broadly speaking, it is an analysis during which the serum of the patient is diluted and subjected to a processing by duplicated in parallel, to obtain two readings that allow the calculation of the avidity index: one with dissociant and another with diluent.This index must be multiplied by 100 to finally classify the result in one of the three possible bands: high avidity (greater than 30%), average na avidity (between 20 and 30%) and low avidity (less than 20%).

Without moving away from science, we can find another use of this term that is not common in everyday speech.In this case, it can be said that the acid sulfuric acid has a marked greediness by water , and that is why it is used for gas drying.