Vaccines that protect against COVID-19 have been developed in record time over the year but, amid fears that people from poorer countries may miss out, the UN has consistently insisted on global solidarity, to ensure that all are protected. In the final part of our series on the ways that the virus has changed the world, we trace the evolution of the COVID-19 vaccines, and how protected we are likely to be in 2021.

With millions forced to work from home this year, offices and shops closing as part of containment measures, and travel severely curtailed everywhere, it was inevitable that the economy would suffer. In part five of our look back at 2020, we focus on the seismic effect that COVID-19 has had on the global economy.

The United Nations is commemorating the first International Day of Epidemic Preparedness on Sunday, underscoring the need to learn lessons from the coronavirus pandemic, and urging greater investments in preparedness, to confront future health emergencies.

The UN health agency chief said on Monday that scientists have been working to understand new COVID-19 variants that have been reported in South Africa and the United Kingdom.