International travel volumes have now fully recovered from the downturn during the COVID-19 pandemic. With the upcoming World Cup poised to drive a surge in Canadian tourism, recent hantavirus and Ebola virus outbreaks remind us of the need to effectively manage travel-related public health risks in a world on the move. Both outbreaks underscore how…
The COVID-19 mRNA-based vaccines that saved 2.5 million lives globally during the pandemic could help spark the immune system to fight cancer. This is the surprising takeaway of a new study that we and our colleagues published in the journal Nature. While developing mRNA vaccines for patients with brain tumors in 2016, our team, led…
Special Feature — When COVID-19 swept the globe in early 2020, health experts braced for devastation in Africa. The continent’s healthcare systems, already stretched thin by endemic diseases like malaria, seemed ill-equipped to handle a new pandemic. Yet as the virus spread, a puzzling pattern emerged – many African countries reported lower COVID-19 severity rates…
Cape Town — When COVID-19 swept the globe in early 2020, health experts braced for devastation in Africa. The continent’s healthcare systems, already stretched thin by endemic diseases like malaria, seemed ill-equipped to handle a new pandemic. Yet as the virus spread, a puzzling pattern emerged – many African countries reported lower COVID-19 severity rates…
IN SHORT: A video circulating on Facebook appears to show South African epidemiologist Salim Abdool Karim stoking fear about Covid vaccines in a TV news interview. But the video is a deepfake, and the falsely attributed claim has been widely debunked. In June 2025, a video started circulating on Facebook that appears to be a…
