| Abbreviation | Definition |
|---|---|
| GOR | Gastro Oesphageal Reflux |
| GORD | Gastro Oesophageal Reflux Disease |
| GORDS | Group of Occupational Respiratory Disease Specialists |
| GPAI | Global Program for Avian Influenza |
| GPID | Great Plains Infectious Disease |
| GRD | Gastroesophageal Reflux Disease |
| GRWD | Grapevine Rugose Wood Disease |
| GSD | Glycogen Storage Disease |
| GSSD | Gerstmann Straussler Scheinker Disease |
| GVHD | Gastrointestinalgraft Versus Host Disease |
| GVHD | Graft Vs Host Disease |
| H1N1 | Influenza Swine Flu |
| HA | Hepatitis A |
| HA | Heroin Addiction |
| HACD | Heavy Alpha Chain Disease |
| HB | Hepatitis B |
| HBD | Hypophosphatemic Bone Disease |
| HC | Heart Condition |
| HC | Hepatitis C |
| HCID | High Consequence Infectious Disease |