Moderna Side Effects Until Pfizer Becomes a Booster Vaccine

 Know the side effects of Moderna to Pfizer which is a booster vaccine.

To note, the five vaccines for the COVID-19 booster are:


CoronaVac or Bio Farma COVID-19 Vaccine

Vaxzevria and Kconecavac from AstraZeneca


Comirnaty from Pfizer.

The approval of the booster vaccine was based on immunogenicity data from observations of the latest clinical trials which showed a significant decrease in antibody levels occurred after 6 months of primary vaccine administration.

The side effects of booster vaccines are a particular concern, considering that some people experience mixed reactions after receiving either the first or second dose of the vaccine.

The following are the side effects of Moderna to Pfizer, summarized by us from various sources, Friday (14/1/2022):

Moderna side effects

The Moderna vaccine is an mRNA vaccine or a vaccine made from spike proteins on the surface of the corona virus. Moderna injections will immediately work to recognize the viral spike protein.

Quoted from CNN, the side effects are not much different from other brand vaccines.

Yes, the bad taste, heat, pain, fever is because our immune system is stimulated. The AEFI (post-immunization follow-up) is temporary. After 24-48 hours it usually goes away. There have been reports of myocarditis (inflammation of the heart) in young people, mostly men.

But this is also temporary. After a few days it's gone. Don't forget that COVID-19 causes longer myocarditis.

Meanwhile in its report, the FDA cited the side effects of the Moderna vaccine during clinical trials including:

Pain, swelling, redness at the injection site



Muscle ache


Nausea and vomiting


Red rash.

CoronaVac side effects

Sinovac is mild to moderate. Some of the side effects of the Sinovac booster vaccine include:

Local reactions such as pain at the injection site


Generally grade 1-2 severity.

AstraZeneca side effects

The safety data for the AstraZeneca vaccine are well tolerated. Side effects or AEFIs were reported as mild and moderate (mild 55%, moderate 37%).

Side effects of the AstraZeneca booster vaccine include:

Pain at the injection site






Body shivering


Arthralgia (pain or feet in the joints).

Zifivax side effects

Zifivax vaccine was developed by Anhui Zhifei Longcom Biopharmaceutical..

There are no serious side effects from the Zifivax vaccine. The most commonly reported systemic side effects are headache, fatigue, and fever.

Pfizer (Comirnaty) side effects

The side effects experienced by recipients of the Pfizer booster vaccine are not much different from those of other vaccines. Some of the side effects of the Pfizer booster vaccine include:

Pain at the injection site


Muscle ache

Joint pain


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