text: PCH can be an after effect of an infection, when a microorganism triggers the formation of antibodies that cross-react with the P antigen on the red blood cell membrane.  Viral infections that can cause PCH include  measles, mumps, influenza, adenovirus,chickenpox, cytomegalovirus, and Epstein-Barr virus.  Bacterial infections that can cause PCH include syphilis,Haemophilus influenzae and Mycoplasma pneumoniae.  PCH can also be a side effect of some vaccinations.  Chronic idiopathic(of unknown cause) PCH also occurs, but it is rare.
option_0: Paroxysmal cold hemoglobinuria causes
option_1: Microangiopathic hemolytic anemia causes
option_2: Hemolytic anemia causes
option_3: Paroxysmal nocturnal hemoglobinuria other diagnostic studies
option_4: Phenylketonuria causes
option_5: Glucose-6-phosphate dehydrogenase deficiency risk factors
option_6: Hemolytic anemia other diagnostic studies
option_7: Hemolytic-uremic syndrome causes