The international community must guarantee equal global access to a covid-19 vaccine

“None of us is safe until all of us are safe.”

This statement by United Nations Secretary General António Guterres sums up the momentous challenge ahead. As the world is still in the midst of the deadliest pandemic of the 21st century, with the number of cases still rising at the global level, immunization is our best chance of ending the pandemic at home and across the world — but only if all countries get access to the vaccine.

Covid-19 is wreaking havoc across the world, and no country will...