Médecins Sans Frontières (MSF) is a special kind of doctor. They are special because they travel around the world to help people who are in need of medical help. They go to places where there is a lot of suffering and people don't have access to medical care, like war zones or refugee camps. They help by providing medical care, vaccines, and other kinds of aid. They also work to call attention to the situations of people who need help but don't have it. MSF works to make sure everyone in the world gets the care they need to stay healthy.