HHS and the Defense Department have agreed to purchase 105 million doses of Pfizer’s updated COVID-19 vaccine, with an option to purchase up to 300 million doses, for the fall vaccination campaign, the White House announced Wednesday (June 29). The contract was announced just one day after FDA’s vaccine advisers recommended that coronavirus vaccines makers focus on developing booster shots that target the Omicron variant this fall. The government is preparing for a vaccine campaign to ward off what is...