In Africa, health experts say a combination of warnings about possible rare blood clots, the rubbishing of vaccines by some leaders and mixed messages over expiration dates have all contributed to the slow rollout across the continent. #Africa #COVID19 #Vaccine #Coronavirus #News #Reuters Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en