High-income countries have already bought up stocks of the leading COVID-19 vaccines for the foreseeable future.
Selfishness was also a problem when the world was developing vaccines for swine flu and bird flu.
Emergency hospital during influenza epidemic at Camp Funston in Kansas around 1918.
National Museum of Health and Medicine
A century ago, the influenza pandemic killed about 50 million people. Today we are battling the coronavirus pandemic. Are we any better off? Two social scientists share five reasons we have to be optimistic.
COVID-19 cases as of March 22 2019.
The Center for Systems Science and Engineering at John Hopkins University
Modelling highlights the urgent need for strong interventions.
A security guard wears gloves while holding a basketball during halftime of an NBA game in Houston on March 5, 2020. The NBA has told players to avoid high-fiving fans and to avoid taking any item for autographs.
AP Photo/David J. Phillip
Initial data from the outbreak in China did not reveal as much information as scientists needed to assess the epidemic. Now, more accurate data suggest an epidemic worse than some previously thought.