Q&A: Distribution? Effectiveness? Safety?Coronavirus vaccine questions answered

CHICAGO — When someone gets a vaccine, how long will it take to become effective? What happens when groups of people are approved to be vaccinated? Are experts concerned about long-term safety? These are some of the many questions readers sent us that we’ve put to health and science experts. Q. How long does it take before the vaccine is effective in the body? A. The vaccine starts to work right away within the body, said University of Chicago Medicine infectious diseases expert Dr. Emily Landon. In a Chicago Tribune Facebook Live, Landon explained how it signals our immune system: “We create …

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