iatrogenic diseaseibrdicdiceberg phenomenicpdicterusidaiddiecill healthilliterateillnessimmunityimmunizationimmunologyimmunotherapyimpairmentimrin vitroinapparent infectioninbreedingincidenceincidence rateincomplete penetrantincubationincubation periodindicatorindigenous populationinduced rechargeindustrial hygieneindustrial wastewaterinfectioninfestationinfiltration waterinfirmaryinfraredinitialinitiationinitiatorinjuredinjuriousinjuryinoculationinputinsecticideinsideinstitutionalizationinsuranceintakeintegrated health services