Microbiology Lab




Aparasite is an organism that lives in an alternate organism known asthe host. A parasite often harms the host as it depends on it forsurvival. A parasite must be in the host to survive, grow andincrease in number. A parasite cannot live as an independentorganism. Despite the fact that a parasite rarely kills the host,sometimes it can cause its death. The parasite depends on the host togain strength. As a result, the host loses some strength. Hence, theparasite benefits at the cost of the host.

Parasitestransmit parasitic diseases. Parasites can be either plants oranimals that exist in a relationship that is non-mutual with adifferent the host. The parasites affecting human beings benefit fromthis relationship while it harms the affected person who in this caseis the host. One of the ways in which the host is harmed is throughthe transmission of parasitic diseases by the parasite-hostrelationship (Evans et al., 2008).

Parasitesaffect different organisms in different ways. A few parasites prefer,or are confined to particular hosts. For instance, the plantmistletoe is viewed as a parasite, however is not able to parasitizepeople or some other creatures. Hence, in most cases, parasites thatmay transmit parasitic illnesses to human beings are parasites thatcan use a human being as a host (Murray et al., 2013).

Parasitesthat can parasitize people incorporate arthropods, microscopicorganisms, nematodes, and protozoa. Routes that protozoa can utilizeto enter a cell of the host are unpredictable and fluctuated. Tworoutes incorporate active penetration of the membrane of a cell underthe protozoa`s own ability, and additionally &quotplaying a trick&quoton the hosts immune system making it to engulfing the protozoa henceallowing it inside the cell.

Thethree methods for establishing a laboratory diagnosis of anintestinal parasitic infection includes

  1. Inspection of fecal samples

  2. Serum and antibody tests to check for immune response

  3. The &quotscotch tape&quot test. The scotych tape is done by inspecting the perianal region using a dab a tape-covered microscope slide against it (Turgeon et al., 2014).


Evans,A. S., &amp Brachman, P. S. (2008). Bacterialinfections of humans: Epidemiology and control.New York: Plenum Medical Book Co.

Murray,P. R., Rosenthal, K. S., &amp Pfaller, M. A. (2013). Medicalmicrobiology.Philadelphia: Elsevier/Saunders.

Turgeon,M. L., &amp Turgeon, M. L. (2014). Immunology&amp serology in laboratory medicine.St. Louis, Mo: Elsevier/Mosby.