<div xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><ul><li>Include codes from <a href="CodeSystem-v3-RoleClass.html"><code>http://terminology.hl7.org/CodeSystem/v3-RoleClass</code></a> where concept is-a <a href="CodeSystem-v3-RoleClass.html#v3-RoleClass-EXPR">EXPR</a></li></ul></div>
<descriptionvalue="A role played by an entity that has been exposed to a person or animal suffering a contagious disease, or with a location from which a toxin has been distributed. The player of the role is normally a person or animal, but it is possible that other entity types could become exposed. The role is scoped by the source of the exposure, and it is quite possible for a person playing the role of exposed party to also become the scoper a role played by another person. That is to say, once a person has become infected, it is possible, perhaps likely, for that person to infect others.
Management of exposures and tracking exposed parties is a key function within public health, and within most public health contexts - exposed parties are known as "contacts.""/>