1. https://coronadashboard.rijksoverheid.nl/landelijk/vaccinaties.
2. Elevated risk of infection with SARS-CoV-2 beta, gamma, and delta variant compared to alpha variant in vaccinated individuals;Andeweg;Sci Transl Med,2022
3. Evaluation of waning of SARS-CoV-2 vaccine-induced immunity: a systematic review and meta-analysis;Menegale;JAMA Network Open,2023
4. Vaccine effectiveness against COVID-19 related hospital admission in the Netherlands: a test-negative case-control study;Niessen;Vaccine,2022
5. https://lci.rivm.nl/handleiding-covid-19-vaccinatie-van-immuungecompromitteerde-patienten#derde-vaccindosis.