Vaccine allergic reactions are rare and short-lived, experts say

British regulators are looking into reports of allergic reactions in two people who got the new Pfizer coronavirus vaccine this week. In the meantime, they've told people with a history of serious allergic reactions to skip the shots.

COVID-19 vaccine shipments begin in historic US effort

​Initially, about 3 million doses of the COVID-19 vaccine were expected to be sent out, and the priority is health care workers and nursing home residents as infections, hospitalizations and deaths soar in the U.S.