Virus variants threaten global recovery, G20 warns

An upsurge in new coronavirus variants and poor access to vaccines in developing countries threaten the global economic recovery, finance ministers of the world’s 20 largest economies warned on Saturday.

Top scientists question the need for COVID-19 booster shots

COVID-19 vaccine developers are making ever bolder assertions that the world will need yearly booster shots, or new vaccines to tackle concerning coronavirus variants, but some scientists question when, or whether, such shots will be needed. In interviews with Reuters, more than a dozen influential infectious disease and vaccine development experts said there is growing […]