DR. Msandeni Chiume Kayuni found herself in the middle of a supply crisis as COVID-19 spread to Africa in April 2020. As head of Pediatrics at Kamuzu Central Hospital in Lilongwe, Malawi, her team faced a critical shortage of N95 and regular surgical face masks. Nurses and doctors were striking. REBECCA RICHARDS-KORTUM, Professor of Bioengineering, Rice University THERESA MKANDAWIRE, Associate Professor of Civil Engineering, University of Malawi “We had members of hospital staff put their tools down because they did not feel it was safe to practice,” she told us in an interview. Ingenuity kicked in. The Malawi team purchased…