The data also revealed that while protection against severe disease is high after a booster dose, “protection against mild symptomatic infection is more short-lived and drops to around 30 percent by about three months”.
Professor Wei Shen Lim added: “With Omicron continuing to spread widely, I encourage everyone to come forward for their booster dose, or if unvaccinated, for their first two doses, to increase their protection against serious illness.”
Who is already receiving a fourth dose of the vaccine in the UK?
The recommended primary course of the vaccine is three doses and is then followed by one booster dose three months after their third jab. However people who are immunocompromised are being offered a fourth dose of the vaccine.