Article content Second doses of COVID-19 vaccines made up nearly half the shots administered on Wednesday, as thousands of Albertans who received a first dose in March show up for another vaccination. More than 22,000 eligible Albertans were given a second dose Wednesday, by far the most to receive a second shot in a single day. Eleven per cent of Albertans age 12 and over are now fully immunized with both jabs. We apologize, but this video has failed to load. Try refreshing your browser. Second doses nearly half of Wednesday's vaccinations in Alberta; 326 active cases in RMWB Back to video Dr. Deena Hinshaw, Alberta’s chief officer of health, explained on Thursday the vaccines work “better than we could have expected.”