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Diseases » Blastocystis hominis » Contagiousness

Is Blastocystis hominis Contagious?

Transmission of Blastocystis hominis from Person to Person

Blastocystis hominis is considered infectious but is not transmitted from person to person. Generally, a disease like this is caused by an infectious agent and not spread between people.
Blastocystis hominis, although infectious, is not a genetic disease. It is not caused by a defective or abnormal gene.

Contagion summary:

If you practice adequate personal hygiene, including thorough hand washing with soap and warm water after using the toilet and before handling food, there is little risk of spreading infection. (Source: excerpt from Blastocystis hominis Infection: DPD)

About contagion and contagiousness:

Contagion and contagiousness refers to how easily the spread of Blastocystis hominis is possible from one person to another. Other words for contagion include "infection", "infectiousness", "transmission" or "transmissability". Contagiousness has nothing to do with genetics or inheriting diseases from parents. For an overview of contagion, see Introduction to Contagion.


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