Code for the mechanism by which disease was acquired by the living subject involved in the public health case. Includes sexually transmitted, airborne, bloodborne, vectorborne, foodborne, zoonotic, nosocomial, mechanical, dermal, congenital, environmental exposure, indeterminate.

Communication of an agent from a living subject or environmental source to a living subject through indirect contact via oral or nasal inhalation.

Communication of an agent from one animal to another proximate animal.

Communication of an agent from an animal to a proximate person.

Communication of an agent from one living subject to another living subject through direct contact with any body fluid.

Communication of an agent to a living subject through direct contact with blood or blood products whether the contact with blood is part of a therapeutic procedure or not.

Communication of an agent from a living subject or environmental source to a living subject via agent migration through intact skin.

Communication of an agent from an environmental surface or source to a living subject by direct contact.

Communication of an agent from a living subject or environmental source to a living subject through oral contact with material contaminated by person or animal fecal material.

Communication of an agent from an non-living material to a living subject through direct contact.

Communication of an agent from a food source to a living subject via oral consumption.

Communication of an agent from a person to a proximate person.

Communication of an agent to a living subject via an undetermined route.

Communication of an agent from one living subject to another living subject through direct contact with mammalian milk or colostrum.

Communication of an agent from any entity to a living subject while the living subject is in the patient role in a healthcare facility.

Communication of an agent from a living subject or environmental source to a living subject where the acquisition of the agent is not via the alimentary canal.

Communication of an agent from a living subject to the progeny of that living subject via agent migration across the maternal-fetal placental membranes while in utero.

Communication of an agent from one living subject to another living subject through direct contact with genital or oral tissues as part of a sexual act.

Communication of an agent from one living subject to another living subject through direct contact with blood or blood products where the contact with blood is part of a therapeutic procedure.

Communication of an agent from a living subject acting as a required intermediary in the agent transmission process to a recipient living subject via direct contact.

Communication of an agent from a contaminated water source to a living subject whether the water is ingested as a food or not. The route of entry of the water may be through any bodily orifice.