NITRA, Slovakia (Reuters) - Slovakia on Saturday started to vaccinate its population against the coronavirus as the country joined a coordinated push by the European Union against the global pandemic. Vladimir Krcmery, a member of the government’s Pandemic Commission, was the first person in the country inoculated by the vaccine produced by Pfizer and BionTech. Hungary also began vaccinating its people on Saturday, a day ahead of rollouts in several other countries including France, Germany and Spain.