COVID-19

Pic:getty/alishahgholi

A big week for mRNA COVID-19 vaccines: Five key developments

By Rachel Arthur

It’s been a big week for mRNA-based COVID-19 vaccines: with both Pfizer/BioNTech and Moderna reporting impressive efficacy for their COVID-19 vaccine candidates. Here's five key takeaways from this week's developments.

J&J has now taken its COVID-19 vaccine into Phase 3 trials for both a 1-dose and 2-dose regimen. Pic:getty/JHDTstockimages

J&J launches Phase 3 trial for 2-dose COVID-19 vaccine

By Rachel Arthur

Johnson & Johnson has launched a second global Phase 3 trial for its Janssen COVID-19 vaccine candidate: this time exploring a 2-dose regimen (its existing Phase 3 trial is for a 1-dose regimen).

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