Covid vaccines: What is the difference between the Pfizer, Oxford, Moderna, Valneva, Novavax and Johnson & Johnson jabs Luke O Reilly
Since the start of the pandemic, scientists around the world have been racing to develop a jab that prevents Covid-19.
Two more jabs, from Moderna and Oxford/AstraZeneca, have since been authorised, and there is a fourth, fifth, and sixth potentially on the way.
One is the Janssen jab, from American company Johnson & Johnson, the world’s first single-shot Covid vaccine, which was found to be 66 per cent effective at preventing moderate to severe Covid-19, but offers high protection against people needing to go to hospital, according to trial results.
Since the start of the pandemic, scientists around the world have been racing to develop a jab that prevents Covid-19. In December, the Pfizer/BioNTech coronavirus vaccine beat its rivals to be the first to be approved for use in the UK. Two more jabs, from Moderna and Oxford/AstraZeneca, have since been authorised, and there is a fourth, fifth, and sixth potentially on the way. One is the Janssen jab, from American company Johnson & Johnson,.