Advisory report of the Health Council of the Netherlands
A booster for the entire population is not yet necessary.
The vaccines are very effective and offer strong protection. Protection against serious illness from COVID-19 has not waned, even among older people and against the Delta variant. Protection also remains strong among the people who were vaccinated first. The vaccines offer 95% protection against hospital admission and 97% against ICU admission.
Ongoing monitoring by RIVMNational Institute for Public Health and the Environment
RIVM constantly keeps a close eye on admission data from hospitals, the situation in nursing homes, and research studies being done in other countries. If the protection provided by COVID-19 vaccination diminishes, a booster campaign will be implemented quickly.