Several countries stand out for their success in delivering coronavirus vaccinations, while most of the world is struggling to figure out how to get immunizations into more arms.

It’s been almost a year since the first COVID-19 vaccines were approved, and half of the world is at least partly vaccinated. Now, the emergence of the omicron variant is underscoring the risks of un…

The global distribution of COVID-19 vaccines is underway, but the emergence of new coronavirus strains threatens to make the pandemic far worse before it gets better.

Moscow’s exit from the deal generated alarm in a number of populous lower-income countries dependent on Ukrainian grain.

As COVID-19 continues to ravage countries including Brazil and India, scientists warn that cases and deaths are being undercounted. Without accurate tallies, government responses won’t be enough to d…