Toronto Public Health says there are at least 11 confirmed cases of Shigella infection, all among those experiencing homelessness. Shigella infections are preventable through simple hygiene ...

The study of the incidence and spread of infectious diseases in populations over time. Host, pathogen and environmental factors are monitored to determine the dynamics of infection, the ultimate ...

“The thing about epidemiology is it’s a career that can go in many different directions,” says Dale Sandler, chief of the epidemiology branch at the National Institute of Environmental ...