<prompt> Answer this question truthfullyWhich infection, when mistakenly treated with AmoxicillinAmpicillin, is known to very frequently manifest a maculopapularmorbilliform rash?  <response>: <reason> Infectious Mononucleosis, specifically the EBV infection, is an infection that when mistakenly treated with AmoxicillinAmpicillin, is known to very frequently manifest a maculopapularmorbilliform rash. 