| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| Healthy volunteers |  
| Gezonde vrijwilligers |  | 
| E.1.1.1 | Medical condition in easily understood language | 
| Healthy volunteers |  
| Gezonde vrijwilligers |  | 
| E.1.1.2 | Therapeutic area | Diseases [C] - Virus Diseases [C02] | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 23.1 |  
| E.1.2 | Level | LLT |  
| E.1.2 | Classification code | 10084465 |  
| E.1.2 | Term | COVID-19 vaccination |  
| E.1.2 | System Organ Class | 100000004865 |  | 
| E.1.3 | Condition being studied is a rare disease | No | 
| E.2 Objective of the trial | 
| E.2.1 | Main objective of the trial | 
| Safety and tolerability of intradermal vaccination of COVID-19 Vaccine Moderna |  
| Veiligheid van intradermale vaccinatie van COVID-19 Vaccin Moderna |  | 
| E.2.2 | Secondary objectives of the trial | 
| Immunogenicity of intradermal vaccination of COVID-19 Vaccine Moderna |  
| immunogeniciteit van intradermale vaccinatie van COVID-19 Vaccin Moderna |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| age: 18 years or older |  
| leeftijd van 18 jaar of ouder |  | 
| E.4 | Principal exclusion criteria | 
| immunocompromised in any way pregnancy
 |  
| immuungecompromitteerd zwangerschap
 
 |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Safety and tolerability of intradermal injection of low dose COVID-19 Vaccine Moderna |  
| Veiligheid van intradermale injectie met COVID-19 Vaccin Moderna |  | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
| f1rst week after every vaccination |  
| eerste week na elke vaccinatie |  | 
| E.5.2 | Secondary end point(s) | 
| Immunogenicity after low dose intradermale vaccination of COVID-19 Vaccine Moderna |  
| immunogeniciteit na lage dosis intradermale vaccinatie met COVID-19 Vaccin Moderna |  | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
| On D0 (before vaccination), D29 (time point after the first dose, on the day of the second vaccination), and on D36, D43, Month 7 and Month 13 (time points after the
 second dose)
 |  
| Op D0 (voor vaccinatie), D29 (na de eerste vaccinatie, op de dag van de tweede vaccinatie), en op D36, D43, maand 7 en maand 13 (tijdspunten na de tweede vaccinatie) |  | 
| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis | No | 
| E.6.2 | Prophylaxis | Yes | 
| E.6.3 | Therapy | No | 
| E.6.4 | Safety | Yes | 
| E.6.5 | Efficacy | No | 
| E.6.6 | Pharmacokinetic | No | 
| E.6.7 | Pharmacodynamic | No | 
| E.6.8 | Bioequivalence | No | 
| E.6.9 | Dose response | No | 
| E.6.10 | Pharmacogenetic | No | 
| E.6.11 | Pharmacogenomic | No | 
| E.6.12 | Pharmacoeconomic | No | 
| E.6.13 | Others | No | 
| E.7 | Trial type and phase | 
| E.7.1 | Human pharmacology (Phase I) | Yes | 
| E.7.1.1 | First administration to humans | No | 
| E.7.1.2 | Bioequivalence study | Yes | 
| E.7.1.3 | Other | No | 
| E.7.1.3.1 | Other trial type description |  | 
| E.7.2 | Therapeutic exploratory (Phase II) | Yes | 
| E.7.3 | Therapeutic confirmatory (Phase III) | No | 
| E.7.4 | Therapeutic use (Phase IV) | No | 
| E.8 Design of the trial | 
| E.8.1 | Controlled | Yes | 
| E.8.1.1 | Randomised | Yes | 
| E.8.1.2 | Open | Yes | 
| E.8.1.3 | Single blind | No | 
| E.8.1.4 | Double blind | No | 
| E.8.1.5 | Parallel group | No | 
| E.8.1.6 | Cross over | No | 
| E.8.1.7 | Other | No | 
| E.8.2 | Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) | No | 
| E.8.2.2 | Placebo | No | 
| E.8.2.3 | Other | Yes | 
| E.8.2.3.1 | Comparator description | 
| reguliere dosis intramusculaire injectie |  
| regular dose intramuscular injection |  | 
| E.8.2.4 | Number of treatment arms in the trial | 2 | 
| E.8.3 | The trial involves single site in the Member State concerned | Yes | 
| E.8.4 | The trial involves multiple sites in the Member State concerned | No | 
| E.8.5 | The trial involves multiple Member States | No | 
| E.8.6 Trial involving sites outside the EEA | 
| E.8.6.1 | Trial being conducted both within and outside the EEA | No | 
| E.8.6.2 | Trial being conducted completely outside of the EEA | No | 
| E.8.7 | Trial has a data monitoring committee | Yes | 
| E.8.8 | Definition of the end of the trial and justification where it is not the last
                        visit of the last subject undergoing the trial | 
| LVLS |  
| Laatste bezoek van laatste deelnemer |  | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 1 | 
| E.8.9.1 | In the Member State concerned months | 6 | 
| E.8.9.1 | In the Member State concerned days | 0 |