FDA Grants Emergency Approval To Pfizer-BioNTech COVID-19 Vaccine

Pfizer's COVID-19 vaccine, the first to receive emergency approval in the US, uses mRNA technology to trigger an immune response. It requires two doses, 21 days apart, and is 95% effective. Distribution involves logistical challenges, including repurposing and unfrozen vaccines, and managing healthcare workers' schedules to avoid crowding and handle potential side effects. Hospitals are preparing to receive and administer vaccines, with plans to start vaccinations shortly after arrival.

What logistical challenges are mentioned regarding the distribution of the vaccine?

What are some potential side effects of the vaccine mentioned in the text?