Infectious Disease Classification

The need to classify (subdivision) of infectious diseases for naturally established groups has been felt for a long time. This is understandable, since it is difficult to operate with huge factual material related to similar but not identical infectious diseases, unless they are brought into any system.

For a long time infectious diseases were divided into contagious (transmitted by contact from person to person), miasmatic (not transmitted by contact from person to person) and contagious-miasmatic (intermediate group).

At the end of the 18th century, under the influence of brilliant microbiological discoveries, classifications were developed based on the etiological trait. This approach unwittingly put a mark of equality between the microbe and the infectious disease. Therefore, in one group there were diseases, different in pathogenesis, clinical current and epidemiological patterns.

Later, numerous attempts were made to classify infectious diseases by clinical and epidemiological grounds. In the classifications proposed by clinicians, it was not possible to combine infectious diseases into groups that developed during evolution. Classifications based on the simultaneous use of different epidemiological data were also irrational.

For the first time, a consistently sustained classification of infectious diseases, based on a single trait (localization of the pathogen in the body), proposed L. V. Gromashevsky. In accordance with the main localization of the pathogen in the body, which determines the mechanism of transmission of infection, all infectious diseases are divided by it into 4 groups:

1) Intestinal infections;

2) respiratory infections;

3) blood infections;

4) Infections of the outer cover.

Infectious Diseases Classification (table)

By sources of infectionOn localization and transmission mechanism
intestinal infectionsrespiratory infectionsblood infectionsinfections of the outer cover
AnthroponosistyphoidParatyf AParatyf BDysentery bacterialAmebiazcholerapoliomyelitisInfectious hepatitisascariasisTrihocephalosisEnterobiosisStaphylococcus intoxicationColienteritesinfluenzameasleswhooping coughdiphtheriaNatural

smallpoxchickenpoxMeningococcal diseaseAseptic serous meningitisPneumonia pneumocococ pc
typhusReturn typhoidmalariasyphilisgonorrheaSoft shankFourth sexually transmitted diseasetrachomaInfectious conjunctivitisscabscabiesStaphylo-Streptococcal dermatitis
The zoonosesbrucellosisLeptospirosisornithosisSalmonellabotulism plaguetularemiaTick-borne

typhoidsRickettsiosaSeasonal encephalitis (type B)
rabiesSodokuanthraxglandersfoot-and-mouth diseasetetanusGas gangrene