Foodborne disease (FBD) outbreaks are of public health concern in low-income countries, affecting 92 million people and leading to 137 000 deaths annually. On 12 October 2022 a suspected FBD outbreak affecting residents sheltered in a community hall in Soweto, Gauteng Province, following the destruction of their homes in a fire, was notified. We investigated to confirm the outbreak and determine the magnitude and the cause.