Pfizer and BioNTech's Omicron KP.2-adapted Covid-19 vaccine recommended for EU authorization, pending EC decision. The vaccine targets multiple Omicron sublineages, including KP.2, LB.1, KP.3, and KP.3.1.1, showing improved response over previous versions. US FDA approved the KP.2-adapted vaccine for ages 12+, with EUA for ages 6 months to 11 years.