By appraising websites, using credibility and content criteria defined by GACVS, the VSN has been developed to deliver information that is easy to access and up-to-date.

[4] It aims to regularly review the vaccine related content disseminated on-line by different health-related organizations around the world, thereby validating them by including them on their list as websites that observe "good information practices".

[2][5][6] In developed countries, more than 90% of young people use the internet regularly, running the potential for misinformation related to vaccination reaching a large proportion of society.

[10][11] As a result, the reliability and standards set by WHO's GACVS and available at VSN has been created to help people judge the quality of the website information they read.

[7] In the year of its creation, the VSN approved 23 websites as members in languages including English, French, Dutch, Italian, German and Spanish.

About one in five provided contact details of vaccination centres and 63.6% of sites were targeted at the general public and health care professionals.