| IPV | inactivated poliomyelitis vaccine or virus; infectious pustular vaginitis; infectious pustular vulvo... |
|---|---|
| ISCO | immunostimulating complex [vaccine] |
| IVV | influenza virus vaccine; intravenous vasopressin |
| KP | Kaufmann-Peterson [base]; keratitic precipitate; keratitis punctata; kidney protein; killed parenter... |
| KPV | key process variable; killed parenteral vaccine |