Covid news: Omicron community transmission is across England – as it happened

Sajid Javid told MPs on Monday that multiple regions of England' were seeing cases of the variant that were not linked to international travel

• New York City sets Covid vaccine mandate for all private employers
• Travel apartheid': Nigeria condemns England's Covid red list
• Omicron variant has now been detected in 16 US states
• Omicron: what do we know about the new Covid variant?
• See all our coronavirus coverage

The Johnson & Johnson booster shot may work well for those who originally had a Pfizer vaccine, a recent study has found.

Researchers at the Beth Israel Deaconess Medical Center in Boston studied 65 people who had received two shots of the Pfizer vaccine. Six months after the second dose, the researchers gave 24 of the volunteers a third dose of the Pfizer vaccine and gave 41 the Johnson & Johnson shot.