Recent vaccines could affect ELISA results?
Mar 15, 1999
I tested ELISA positive and 22 days after, the immunoblot gives indeterminate, my last exposure was about 8 months before ELISA. 5 days before the ELISA I received FLU and tetanos (forgive me, I don't know the word in english) vaccines, could this vaccines cause the positive result of the ELISA.
Response from Dr. Holodniy
Vaccines create specific antibody responses toward the antigen (protein) that is being introduced. There can be some nonspecific immune activation as well. Periodic reports have surfaced over the years regarding false positive HIV antibody tests after flu vaccine, not tetnus. I would definitely get retested for HIv. MH
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