Is Reiterís syndrome Contagious?
Not contagious, despite often being caused by a contagious infection.
Reiterís syndrome is not contagious; that is, a person
with the disorder cannot pass it to somebody else. However, the bacteria
that can trigger it can be passed from one person to another, although
not all people infected with the bacteria will develop Reiterís
syndrome. Rather, it is likely that people who develop the disease have
inherited a trait that makes them susceptible. (Source: excerpt from Questions and Answers About Reiter's Syndrome: NIAMS)
About contagion and contagiousness:
Contagion and contagiousness refers to how easily
the spread of Reiterís syndrome 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.