| HIV | Human immunodeficiency virus |
| PLWHIV | patients living with human immunodeficiency virus |
| MPOX | monkeypox |
| “Chemsex” | chemical sex |
| MSM | men who have sex with men |
| WHO | World Health Organization |
| PHEIC | Public Health Emergency of International Concern |
| PCR | polymerase chain reaction |
| STI | sexually transmitted infections |
| IQR | interquartile range |
| ECDC | European Center for Disease Prevention and Control |
| TESSy | The European Surveillance System |
| ART | antiretroviral therapy |