COVAX, the push to equitably distribute COVID-19 vaccine throughout the world, got a major boost today with a fresh infusion of pledges, as G7 leaders gathered virtually at a security conference.In other international developments, Johnson & Johnson today submitted its COVID-19 vaccine for World Health Organization (WHO) assessment, and two researchers published more promising findings for already listed vaccines, AstraZeneca-Oxford and Pfizer-BioNTech.G7 support adds more momentum to COVAXIn advance of the G7 meeting, who convened the group, encouraged the participants from some of the biggest economies in the world to sign onto a new WHO declaration on vaccine equity.At today's meeting, leaders from the Canada, France, Germany, Italy,