Identifying allergies to vaccines | New Straits Times

NSTletter In general, allergic reactions to vaccines are due to adjuvants and other excipients in the vaccine, such as preservatives, rather than to the active ingredient itself. coronavirus covid19

Clinical development is a three-phase process. During Phase 1, small groups of people are given the trial vaccine. In Phase 2, the vaccine is given to people with characteristics similar to those for whom the new vaccine is intended, such as age and physical health.