Hepatitis C infection is caused by a virus that attacks the liver. It is transmitted primarily through blood-to-blood contact with an infected person, including through sharing needles or other drug-related equipment and from mother to baby at birth. Hepatitis C can cause both acute and chronic infection, often without symptoms. Chronic infection can lead to serious liver disease or cancer. There is currently no vaccine to prevent hepatitis C, although effective therapy is now available.
PHO Rounds: Tuberculosis Contact Investigation: Principles and practice
This PHO Rounds will review the principles of TB contact investigation, including transmission risk assessment, prioritizing follow-up based on the source case’s likely infectiousness, the nature of the exposure(s), and factors that increase immunologic vulnerability of exposed individuals to TB disease.