A fourth Covid jab is not yet needed, say UK experts, because booster doses continue to provide high protection against severe disease from the Omicron variant among older adults.
For สล็อตออนไลน์ It's not as difficult as it sounds. The basic way to play almost every website is similar.
UK Health Security Agency data show three months after boosting, protection against hospitalisation remains at about 90% for people aged 65 and over.
Protection against mild symptomatic infection is more short-lived.
That drops to around 30% by about three months.
Figures also show why it is important to get a booster dose if you have only had two doses so far.
With just two vaccine doses, protection against severe disease drops to around 70% after three months and to 50% after six months.
The Joint Committee on Vaccination and Immunisation (JCVI), which advises on vaccine policy, says the priority therefore remains to get first, second and third doses to those who have not already had them.
This is despite some countries such as Israel starting to give fourth Covid shots to manage the highly infectious Omicron variant that is causing rising numbers of infections around the globe.
More than 35 million boosters and third doses have now been administered across the UK.
Prof Wei Shen Lim, the JCVI's chair of COVID-19 immunisation, said: "The current data show the booster dose is continuing to provide high levels of protection against severe disease, even for the most vulnerable older age groups.