Business News Covid-19 re-infection rare, but can occur: UAE doctors Dr Rajesh Kumar Gupta, specialist internal medicine at Burjeel Specialty Hospital, Sharjah, said however the numbers are negligible compared to first-time infection cases. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related UAE to test cloud-zapping drones to increase rainfall Covid vaccine UAE: 143,680 doses administered in 24 hours