Moderna Vaccine Headache. No unexpected safety signals occurred but approximately 60 of participants who received a primary course with an mRNA vaccine reported systemic adverse events following their booster dose with Moderna mild to moderate malaise headache and nausea which was more frequent than participants who received Janssen as their primary vaccine course. Injection site pain and swelling chills fever fatigue and headache read the FDAs briefing here.
Moderna vaccine side effects. Common side effects after the Moderna vaccine include. This shows your immune system is working.
General side effects.
No unexpected safety signals occurred but approximately 60 of participants who received a primary course with an mRNA vaccine reported systemic adverse events following their booster dose with Moderna mild to moderate malaise headache and nausea which was more frequent than participants who received Janssen as their primary vaccine course. Both the Moderna and Pfizer COVID-19 vaccines can cause mild viral-like side effects including headaches that typically resolve quickly. The doses are administered 28 days apart and the vaccine trains the immune system to fight against future infections. The rate of headachemigraine episodes voluntarily reported by recipients of COVID-19 vaccines up to May 9 2021 was 129 103 and 21 per 100000 for AstraZeneca Pfizer and Moderna vaccines respectively.