Allergy shots for humans can be a long-term thing, as in years, so one round of shots will not make much of a difference. My sister did 15 years of allergy shots and actually got rid of her tree and grass pollen allergies. Sadly, it didn't get rid of her cat and dog allergies - didn't even make a dent in those. But don't worry, she is still planning on adopting a dog when she retires!
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