打兩針唔係100%防重症
The UKHSA analysed more than 600,000 confirmed and suspected cases of the Omicron variant up to 29 December in England.
It found that a single vaccine dose reduced the risk of needing hospital treatment by 52%. Adding the second dose increased the protection to 72%, although after 25 weeks that protection had faded to 52%.
And two weeks after getting a third dose, that protection against hospitalisation was boosted to 88%.