Scientists have observed that 501Y.V2 has quickly become "dominant" among multiple variants that have been circulating in the South African population.
It’s time-consuming but worthwhile: Residents respond to messages about Covid testing and vaccines when outreach teams speak their language and make a personal connection.
Zambian data challenges the assumption African populations may have been spared from COVID-19.
Will these rapid tests really allow us to lower our guard during the pandemic?
Without a vaccine, the worldwide economic impact of COVID-19 would have been $3.4 trillion a year. But even with a COVID-19 vaccine, unequal allocation could cost the global economy up to $1.2 trillion a year in GDP.
COVID-19 is deepening global food insecurity, as the pandemic’s economic impact adds to existing challenges.
Vaccines that use harmless viruses as a delivery mechanism are vulnerable to being attacked by our immune system – but experimenting with how they are given could get around this.
A medical professor explains the reasoning behind the delay in the UK and what impact this might have on the vaccine's effectiveness.
Some people continue to shed viral RNA for weeks or months after developing COVID-19. Could persistent pockets of infection be to blame?