Dutch study shows the effectiveness of COVID vaccination in reducing hospitalizations


Scientists on the Nationwide Institute for Public Well being and Setting, the Netherlands, have performed a examine to discover the efficacy of coronavirus illness 2019 (COVID-19) vaccination in stopping disease-related hospitalization.

The examine, which is presently out there within the medRxiv* preprint server, reveals that the COVID-19 vaccination has prevented a lot of hospitalizations through the pandemic.

​​​​​​​Research: Number of COVID-19 hospitalisations averted by vaccination: Estimates for the Netherlands, January 6, 2021 through August 30, 2022. ​​​​​​​Picture Credit score: Hung Chung Chih / Shutterstock


The COVID-19 pandemic attributable to extreme acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has considerably burdened the worldwide healthcare system, with greater than 650 million infections and over 6.66 million deaths worldwide. Nevertheless, with the deployment of COVID-19 vaccines, a substantial discount in instances, hospitalizations, and deaths has been seen.

As much as August 2022, the Netherlands had detected 8.5 million COVID-19 instances, leading to 113,000 hospitalizations and 22,000 deaths. Because the initiation of COVID-19 vaccination applications in January 2021, greater than 36 million vaccine doses have been administered within the nation.

Within the present examine, scientists have estimated the variety of COVID-19-related hospitalizations averted by the vaccines within the Netherlands. This may assist the overall inhabitants and policymakers to grasp the importance of COVID-19 vaccination.

Research design

The variety of COVID-19-related hospitalizations prevented by COVID-19 vaccination was estimated from January 6, 2021, to August 30, 2022 (first examine interval). The estimation was additionally accomplished from August 2, 2021, to August 30, 2022 (second examine interval). Throughout this era, all adults had the chance to obtain main vaccination, and kids aged 12 – 17 years grew to become eligible for the vaccination.

The variety of prevented hospitalizations per age group was estimated utilizing vaccine efficacy estimates, vaccine protection estimates (main and booster vaccinations), and the noticed variety of COVID-19-related hospitalizations. Each absolute and relative numbers of prevented hospitalizations have been estimated for every examine interval whereby a viral variant was dominant.     

Essential observations

A variation in main vaccine protection was noticed on the finish of the examine interval. The protection ranged from 73% for the age group 12-49 years to 94% for the age group 70-79.

The vaccine protection for the primary booster dose diverse from 42% for the age group 12-49 years to 88% for the age group 70-79. For the second booster dose, the vaccine protection diverse from 0% for the age group 12-49 years to 67% for the age group 70-79.

General, the vaccine protection was greater in older age teams than in youthful age teams.

Throughout your entire examine interval, a complete of 98,170 hospitalizations have been prevented by COVID-19 vaccination. The vast majority of these hospitalizations (90,753) have been prevented through the second examine interval (August 2, 2021, to August 30, 2022).

Based mostly on the estimates, the COVID-19 vaccination prevented 57% and 67% of all hospitalizations through the first (January 2021 to August 2022) and second examine intervals, respectively.

The variety of prevented hospitalizations was highest within the age group 70-79 years and lowest within the age group 12-49 years.

Through the interval when the SARS-CoV-2 alpha variant was dominant, about 8% of all hospitalizations have been prevented by vaccination. Through the delta and omicron waves, about 72% and 63% of all hospitalizations have been prevented by vaccination, respectively.

Research significance

The examine highlights the significance of COVID-19 vaccines in stopping disease-related hospitalization. The best constructive impression of vaccination has been noticed in older individuals aged 70-79 through the delta variant outbreak.

As talked about by the scientists, such a vaccine-mediated discount in hospitalization price has decreased the strain on hospitals and healthcare employees and improved entry to healthcare services for each COVID and non-COVID sufferers. 

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