Covid-19 vaccines tweaked to better match today’s omicron threat are expected to roll out in a few weeks but still up in the air is how much benefit the booster shots will offer, who should get one — and how soon. Pfizer and rival Moderna both asked U.S. regulators this
New COVID-19 booster shots specifically targeting the omicron variant could be making their way into arms soon, but who will be eligible, when might shots begin.
COVID-19 vaccines tweaked to better match today’s omicron threat are expected to roll out in a few weeks but still up in the air is how much benefit the booster shots will offer, who should get one and how soon. Pfizer and rival Moderna both asked U.S. regulators this week to authorize modified versions…