

Reading the article might help:
Although young people in the UK are offered a meningitis vaccination that protects against certain strains of the disease, since 2015 only infants have been vaccinated against MenB, which is one of the most common causes of meningitis among teenagers and young adults, said Nutt.
Paul Hunter, professor in medicine at the University of East Anglia, England, said that while some countries offer a MenB booster vaccine to adolescents, the results of cost-benefit studies mean that UK officials decided not to do so.
The UK decided not to give boosters to teenagers despite knowing the risk to young adults who attend universities. This is a systemic failing on behalf of the government, not the fault of those who got infected and died.


The article also states that since 2015, only infants have been given the vaccine and there were no boosters for young adults.