COVID-19 is glaringly revealing the vulnerability of the systems we rely on. Paradoxically, factors that increase vulnerability to COVID-19 are also the ones that enhance vulnerability to climate change, such as income inequity, inappropriate and inadequate housing, employment type, age, and existing health conditions. This is a cause of concern, as both the crises impact the most vulnerable — the homeless, migrants, poor, the marginalised — who already have low or no access to food, housing, healthcare, water and sanitation.