Moderna is developing eight other vaccines that use mRNA. The company has tested them in animals and in 1,700 people, and has not had cases of anaphylaxis or other severe allergic reactions linked to the vaccine, Dr. Jacqueline Miller of Moderna said. One anaphylaxis case occurred two months after vaccination, in a person with a soy allergy. Anaphylactic reactions to vaccines generally occur within minutes or even seconds after the shots are administered.
Other side effects — fever, chills, fatigue, headache, muscle and joint pain — are much more common after getting the Moderna vaccine, especially after the second shot. …
