Moderna Inc yesterday reported that it is working with US government scientists to study an experimental booster shot that targets a concerning new variant of the coronavirus, and has raised its global COVID-19 vaccine production goal for this year by 100 million doses, Reuters reported.

It will also experiment with using its experimental shot and the combined shot as primary vaccinations against COVID-19, administering two-dose regimens for people who have not yet received a shot and have not been infected.