Coronavirus Disease 2019 (COVID-19)
COVID-19 is a respiratory illness caused by the SARS-CoV-2 virus. It first emerged in late 2019 and quickly spread worldwide, resulting in a global pandemic. The virus primarily spreads through respiratory droplets when an infected person coughs, sneezes, or talks, and it can also be transmitted by touching contaminated surfaces. COVID-19 can cause a range of symptoms, from mild respiratory issues to severe pneumonia and multi-organ failure, with older adults and those with underlying health conditions being particularly vulnerable.
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.