Pathogen Circulation

Pathogen circulation

Pathogen circulation is the constant and sequential transmission of the causative agent of an infectious disease from one susceptible organism to another. This process ensures the existence of the pathogen as a biological species.

Circulation allows the pathogen to survive in nature, despite the fact that it is a parasite and cannot exist outside the host body. Thanks to constant transmission from one host to another, the pathogen receives the necessary conditions for reproduction and spread.

The circulation mechanism depends on the characteristics of the specific pathogen. Some microbes are transmitted by airborne droplets, others - through blood-sucking insects or through the fecal-oral transmission mechanism. In any case, circulation ensures the constant presence of the pathogen in a population of susceptible hosts.

Thus, pathogen circulation is an important epidemiological process that maintains the existence of many infectious diseases in human and animal populations. Understanding circulation mechanisms is essential for developing effective measures for the prevention and control of infectious diseases.



Pathogen circulation is the process of constant and sequential transmission of the causative agent of an infectious disease from one host organism to another, which ensures the existence of the pathogen in nature as a biological species. The infectious agent can be transmitted in various ways, including airborne droplets, contact and food.

The circulation of pathogens can occur both within and between populations, which is a key factor in the spread of infectious diseases. It may be limited to certain areas or occur on a global level.

One example of pathogen circulation is the transmission of influenza virus between people. The influenza virus constantly circulates in the human population, ensuring the existence of this pathogen as a biological species. It can be spread through coughing, sneezing and even close contact with an infected person.

Another example of pathogen circulation is the transmission of bacteria between animals and humans. Some bacteria, such as Salmonella and Campylobacter, can be transmitted between animals and humans through food, water and skin contact. This can lead to infections in people who have not had contact with animals.

In general, the circulation of pathogens plays an important role in maintaining the infectious process and the spread of infections. It requires control and prevention to prevent the spread of infectious diseases and preserve public health.