Overview
A contact investigation is a routine public health practice to limit the spread of a disease within the community. Contact investigations have been conducted for decades for communicable (infectious) diseases, for example tuberculosis (TB), sexually transmitted infections, measles, and now the new coronavirus, COVID-19.
These investigations are made up of two fundamental activities:
- Case Investigation: the identification and investigation of a person with either a confirmed or probable diagnosis
- Contact Tracing: the identification of persons who have been exposed to a case and are possibly infected
Contact investigations are conducted by well-trained staff. They may be public health or health care professionals, health educators/outreach workers, and even community members who have certain skills and proper training. Training is important because case investigations and contact tracing must be done quickly and with knowledge and skills in areas such as patient confidentiality, effective communication, cultural sensitivity, and complex health topics.