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Coronavirus vaccine being developed in Leiden likely won’t be tested in NL
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Coronavirus vaccine being developed in Leiden likely won’t be tested in NL

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© 2025 IamExpat Media B.V.
© 2025 IamExpat Media B.V.
Mar 24, 2020
Mina Solanki
Completed her Master's degree at the University of Groningen and worked as a translator before joining IamExpat. She loves to read and has a particular interest in Greek mythology. In addition to this, she is an avid rower.Read more

In Leiden, American medical group Johnson & Johnson is working with over 100 people to create a vaccine against coronavirus (COVID-19). However, it is likely that this vaccine will not be tested in the Netherlands.

Strict rules

The reason for this is the strict rules that the country has regarding human clinical trials. These are stricter than in other countries such as the UK and America and the group wants to avoid delays. After being questioned on where testing will take place, Janssen, the pharmaceutical subsidiary of Johnson & Johnson, said to Het Financieele Dagblad, “We are choosing the fastest and best way”. 

It’s likely testing will be carried out in the UK or US. According to the company, testing the vaccine will take too long for how urgently the vaccine is needed if Dutch procedures are followed. Currently, dozens of companies worldwide are trying to develop a vaccine against coronavirus. Janssen hopes to be able to test its vaccine against coronavirus on people in November. 

Take a look at the latest update for coronavirus in the Netherlands.

By Mina Solanki