Self-Study Modules for Effective TB Interviewing
Associate – a person who has been identified by the index
patient in a source case investigation as someone with whom he or
she spends prolonged, frequent time. A person who is somehow affiliated
with a patient who has noninfectious tuberculosis or another contact,
often used in connection with source-case investigations.
Outbreak – a greater-than-normal or greater-than-expected
number of individuals infected or diagnosed with suspected or verified
TB in a given period of time or a particular place.
Proxy – a person who is interviewed in the place of the
index patient; proxies can be family members or close friends.
A proxy is used if the patient is deceased, physically or mentally
hindered, very young, uncooperative, or unable to be located.
Restriction fragment length polymorphism (RFLP) analysis
– A method of DNA fingerprinting, which can be used to identify
specific strains of M. tuberculosis and, thus, track TB transmission
Social network – linkage of persons or places where TB
is spread through shared air space and common ties (e.g., social)
amongst the persons and settings involved.
Social network analysis – looking at routinely collected
interview data to find common links amongst both cases and infected
persons; these links may be persons or places.
Source case – a person with infectious TB disease
who is responsible for spreading
M. tuberculosis to another person or persons.
Source case investigation – the process of conducting a
public health investigation to determine who may have transmitted
M. tuberculosis to a patient when recent
transmission is reported. Source case investigations can be applied
to both recent transmissions in infected adults and children and
for disease in very young children.
Undocumented – the term used to describe a person who is
not in the country on a valid visa.