Journal of Public Health Policy and Planning

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Review Article - Journal of Public Health Policy and Planning (2021) Volume 5, Issue 7

Review on types of pathogens.

Laurier Elod

Department of Medicine, Stanford University, United States 

*Correspondence to:

Laurier Elod

Department of Medicine

Stanford University

United States

Email id: - [email protected]

Accepted on July 13, 2021

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Green growth are single-celled eukaryotes that are by and large non-pathogenic albeit pathogenic assortments do exist. Protothecosis is an infection found in canines, felines, cows, and people brought about by a sort of green alga known as prototheca that needs chlorophyll. One of the bacterial sicknesses with the most noteworthy illness trouble is tuberculosis, brought about by the bacterium Mycobacterium tuberculosis, which killed 1.5 million individuals in 2013, generally in sub-Saharan Africa. Pathogenic microbes add to other worldwide huge sicknesses, like pneumonia, which can be brought about by microscopic organisms like Streptococcus and Pseudomonas, and foodborne ailments, which can be brought about by microorganisms like Shigella, Campylobacter, and Salmonella. In patients with cystic fibrosis, Pseudomonas microscopic organisms can shape a biofilm that has a high protection from the invulnerable framework and anti-microbials by creating versatile changes and delivering harmfulness factors. Regularly found in soil and sewage, the species Prototheca wickerhami is the reason for most human instances of the uncommon disease of Protothecosis [1].


Bacteria exist in the range of 0.15 and 700 μM in length,are innocuous or useful to people. Be that as it may, a moderately little rundown of pathogenic microbes can cause irresistible illnesses. Pathogenic microorganisms have a few different ways that they can cause infection. They can either straightforwardly influence the cells of their host, produce endotoxins that harm the cells of their host, or cause a sufficient insusceptible reaction that the host cells are damaged. Pathogenic microbes additionally cause diseases like lockjaw, typhoid fever, diphtheria, syphilis, and leprosy.


Fungi are eukaryotic life forms that can work as microbes. There are around 300 known growths that are pathogenic to people including Candida albicans, which is the most widely recognized reason for thrush, and Cryptococcus neoformans, which can cause an extreme type of meningitis. The common contagious spore size is <4.7 μm long, however a few spores might be bigger.


Not to be mistaken for Virusoid or Virus. Viroids are the littlest irresistible microbes known. They are made exclusively out of a short strand of round, single-abandoned RNA that has no protein covering. All realized viroids are occupants of higher plants, and most reason illnesses, whose individual monetary significance on people differ broadly [2].

Parasitic Diseases

are single-celled eukaryotes that feed on microorganisms and natural tissues. Considered as "one-celled creature" as they have creature like practices like motility, predation, and an absence of a cell divider. Numerous protozoan microbes are viewed as human parasites as they cause an assortment of infections, for example, jungle fever, amoebiasis, giardiasis, toxoplasmosis, cryptosporidiosis, trichomoniasis, Chagas illness, leishmaniasis, African trypanosomiasis (resting affliction), Acanthamoeba keratitis, and essential amoebic meningoencephalitis (naegleriasis).Parasitic worms (Helminths) are macroparasites that can be seen by the unaided eye. Worms live and feed in their living host, getting sustenance and haven while influencing the host's method of processing supplements.


Infections are little particles, ordinarily somewhere in the range of 20 and 300 nanometers in length, containing RNA or DNA. Infections require a host cell to imitate. A portion of the illnesses that are brought about by viral microbes incorporate smallpox, flu, mumps, measles, chickenpox, ebola, HIV, rubella, and COVID-19 [3].


  1. Mosley WH, Measham AR. Disease control priorities in developing countries. Jamison DT, editor; New York: Oxford University Press; 1993.
  2. Knapp MS, Shields PM, Turnbull BJ. Academic challenge in high-poverty classrooms. Phi Delta Kappan. 1995; 76(10):770–776
  3. The Howard Hughes Medical Institute. The Race Against Lethal Microbes. Vol. 6. Institute's Office of Communications; 1996. The return of tuberculosis.
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