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.
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.