Suddenly there is a light at the end of the long, dark, scary tunnel – and it isn’t a flickering light either. It is bright and will probably get brighter in the days to come. You could almost hear the world breathe a sigh of relief. But at the same time, there’s some understandable reticence to embrace it with no questions asked. It is the fear of the still-unkown that’s making people hold back, though the scientific community is quite upbeat about them, about the coronavirus vaccines. The CDC answers the questions that plague you so you could have the right idea and make the right decisions about the vaccines.