Brief Answer:
yes,it is possible.

Detailed Answer:
Hello.

I read carefully your query.

Fever and body aches are not typical side effects of allergy shots.
Allergy shots can cause an allergic reaction in various degrees .Usually is causes only local reactions like swelling ,redness,irritation in the site of injection
In rare cases it can cause generalized symptoms of an allergic reaction like watery eyes,runny nose,sneezing ,body itching ,skin rash ,body aches and a low grade fever.

If these symptoms happen only after the allergy shot and resolve few days after the shot ,most likely they are due to the systemic reaction of the body to the allergens present in the shots.

These reactions tend to be milder with time ,while the allergy desensitization occur.

Hope it helps.
Let me know if you have any other question.I will be happy to help.

Kind regards,
Dr.Rovena Murati

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