Last year, 189 countries – home to roughly 65% of the global population – cut themselves off from the world at some point. Borders are now reopening and travel resuming, but normal is a ways off.
The coronavirus pandemic has driven a lot of scientific progress in the past year. But just as some of the social changes are likely here to stay, so are some medical innovations.
Millions of vaccinated people have been waiting for guidelines on what they can do safely. The CDC says it's OK to gather with other vaccinated people, but it's still best to avoid travel.
Shoring up surveillance and response systems and learning lessons from how the COVID-19 pandemic unfolded will help the world be ready the next time around.
Researchers are closely watching the coronavirus mutants to make sure vaccines can be adjusted if necessary. But scientists don't know whether vaccines will be effective in those already vaccinated.
The US was not ready for the coronavirus pandemic in 2020. What can public health leaders and policymakers do to make sure we don't face another winter of rampant disease?
With outdated delivery systems at many hospitals and clinics, mistakes can lead to costly duplication of services and poor patient outcomes. But there are ways to fix the current system.
Vaccination has been controversial from its beginning. Gaining people's trust in vaccines has been crucial. An important part of that is a strong communications plan.