1. The Pfizer-BioNTech and Moderna vaccines require two doses, spaced 3 to 4 weeks apart. Mild pain at the injection site, fatigue, headache and muscle aches are common reactions.
2. The vaccines do not contain a live virus, so they can’t cause COVID-19.
3. Health care workers and residents of long-term-care facilities will be the first groups to receive the vaccine.
4. Vaccines provide protection ag…