The Canadian doctor who headed up Doctors Without Borders for six years says health-care workers fighting COVID-19 should be readying themselves for the worst-case scenario.

Dr. Joanne Liu, who led Doctors Without Borders through some of the worst medical crises of the last decade, is moving back to Montreal after six years with the organization.

This week, we profile local people and organizations trying to make impactful changes, from Doctors Without Borders to Yes Montreal to the Generations Foundation.

Coming off what was an incredibly busy year for Doctors Without Borders, the Canadian doctor who leads organization can foresee what challenges the humanitarian agency may be in 2015.