WASHINGTON (AP) — Four former presidents are urging Americans to get vaccinated as soon as COVID-19 doses are available to them, as part of a campaign to overcome hesitancy for the shots. Two public service announcements from the Ad Council and the business-supported COVID Collaborative feature Presidents Barack Obama, George W. Bush, Bill Clinton and Jimmy Carter as well as first ladies Michelle Obama, Laura Bush, Hillary Clinton and Rosalynn Carter. All of them have received doses of the COVID-19 vaccines. One ad features photos of the former presidents and their spouses with syringes in their upper arms as they urge Americans to “roll up your sleeve and do your part” by getting vaccinated.