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COVID-19 vaccine

Leiden researchers are helping develop safe COVID-19 vaccines.

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News articles

T-cells more important in the fight against the COVID-19 virus than initially thought
01 August 2022

A COVID-19 vaccine that specifically instructs the immune system to produce T-cells rather than antibodies is shown to provide good protection in a mo...
mRNA boosters are the most effective upon receiving Janssen vaccination
21 January 2022

A coronavirus booster shot provides a better immune response against COVID-19 than a single vaccine dose. mRNA boosters are the most effective upon re...
The most read stories of 2021 from Leiden University
19 December 2021

Research into depression in children, Leiden alumni in the Dutch House of Representatives and an exceptional achievement by one of our students: what ...
Animation: Why Leiden is the birthplace of the Janssen vaccine
25 May 2021

If you'll soon be getting a COVID-19 vaccine, you might just get the Johnson & Johnson (Janssen) one. This vaccine was developed for the most part in ...
‘We couldn't really celebrate our vaccine being approved, but we were over the moon’
07 May 2021

On 11 March, pharmaceutical company Janssen received approval to launch its corona vaccine on the European market. This made Janssen the fourth compan...
‘Skin injection could allow us to vaccinate up to five times more people from the same supplies’
12 April 2021

The current COVID-19 vaccination campaign involves injecting the vaccine into muscle tissue, but injecting a smaller amount of vaccine in the skin mi...
Janssen COVID-19 vaccine approved for use in EU
11 March 2021

The Janssen-Cilag International N.V COVID-19 vaccine has received authorization for emergency use by the European Medicines Agency (EMA) on March 11. ...
Race against time: Helping the Netherlands secure almost 20 million Pfizer vaccines
18 February 2021

The whole world is waiting anxiously for sufficient supplies of coronavirus vaccines. As Launch Navigator at Pfizer, alumnus Dennis de Mik must help e...
‘We cannot abandon coronavirus measures until vaccines are shown to prevent virus transmission too’
01 February 2021

All acute care staff at Leiden University Medical Center have received their first and sometimes even their second dose of the coronavirus vaccine. Bu...
How NeCEN helped develop the Johnson & Johnson Covid-19 vaccine
11 January 2021

The Phase 3 clinical trial results of the promising Covid-19 vaccine of Johnson & Johnson are expected this month. The Dutch electron microscopy facil...

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