Proceedings of the 28th European Paediatric Rheumatology Congress (PReS 2022)

Table 1 (abstract P497). Vaccination status and COVID-19 infection among adolescents with AIIRD

Vaccine doses	Total	0	1	2	3
Adolescents with AIIRD	1,639	451 (27.5%)	179 (10.9%)	745 (45.5%)	264 (16.1%)
COVID-19 infection	277	234	22	20	1
Infections / vaccinated*	16.9%	51.9%	12.3%	2.7%	0.4%
Vaccine effectiveness**			76.3%	94.8%	99.2%

* Percentage of COVID-19 infection per vaccine dose
** Vaccine effectiveness calculated according to the formula: VE=(NVAC-VAC)/NVAC
(VE - Vaccine effectiveness, NVAC - Attack rate among the unvaccinated, VAC - Attack rate among the vaccinated)

ISSN: 1546-0096