Affecting more than one in 10 people, side effects may include:
- Muscle pain
Injection-site reactions.At the injection site, which will be the upper arm, there might be pain, redness, swelling, hardening or itching of the skin.
Imvanex must not be used in patients who are allergic to chicken protein, benzonase, and gentamicin.
How effective is Imvanex at preventing severe illness from Monkeypox?