Is fever sometimes a side effect of a vaccination? ?!


Question: Is fever sometimes a side effect of a vaccination.? .?
From what I learned a vaccine contains a "dead pathogen" that the immune system fights of easily and remembers it so in case the REAL pathogen attacks the body is ready to fight it off. But, when the pathogen is injected in the body( I know it's harmless) doesn't the body also use fever sometimes to fight it off, digest it and remember it.?Health Question & Answer


Answers:
Yes. Basically a fever is not caused by the infectious agent itself, it's part of how your body responds to infections. Most human pathogens have evolved to grow best at 98.5 degrees - normal body temperature. By upping it, their growth is severely limited, and the body gains time to develop an adaptive immune response. So yes, your explanation is perfectly correct as far as it goes.


Your body thinks an infection is present, it's responding to try to kill it. Nevermind that it's essentially a 'fake' infection that gets killed off very quickly. It can't tell that - which is why vaccines work.Health Question & Answer

yes -
you made an excellent description of how inactivated vaccines work.
the mere stimulation of the immune system can cause release of interferons from the immune system -- these chemicals are what cause the fever and aches when you have influenza. These same chemicals cause the mild fever and aches that about 3% of patients get upon receipt of any vaccine product.

As a rule, if that happens, the symptoms are gone by the next day. Best advice is to take tylenol and go to bed. Try to avoid aspirin after vaccinations - theoretical risk of Reye Syndrome.Health Question & Answer

Yes, you can get a low grade temperature from a vaccination. You may also experience some redness, swelling and tenderness at the injection site. All this is normal and will only last a few days. Getting the vaccination is well worth the discomfort.Health Question & Answer

that depends on the person actually, vaccines aren't supposed to cause fever, but in some persons they do, and there's nothing to worry about it.-Health Question & Answer



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