Outbreak Investigation

public_health

The largest measles outbreaks occur where population immunity gaps, health system constraints, and viral transmission dynamics intersect. Measles remains one of the most contagi...

food-safety

Listeria monocytogenes is a bacterium that causes listeriosis, a serious infection primarily affecting pregnant people, older adults, newborns, and those with weakened immune sy...

Disease Outbreaks and Epidemiology

Patient zero is the label sometimes given to the first case of an outbreak in a specific population or location. In COVID-19, it can refer to the earliest detected case in a cit...