Original Summary

Reuters Scientists say they have discovered why the bacteria responsible for the UK's worst outbreak of meningitis B in Kent earlier this year proved so dangerous. More than 20 young people, mostly students, were infected in the March outbreak, linked to a Canterbury nightclub. All needed hospital treatment, while nine ended up in intensive care and two died. Experts at the UK Health Security Agency (UKHSA) and the University of Oxford, who have looked at the DNA of the bacterium, say it picked up some genetic material from other bugs found naturally in the throats of some people. This exchange created a new strain or variant that then spread between clubbers and caused severe illness. Experts stress the meningitis vaccine currently being offered to more than a million young people starting university protects against it. Rare, but it could happen again "This investigation shows just how quickly and dramatically these bacteria can change," says Dr Charlene Rodrigues, consultant in Pathogen Genomics at UKHSA. "The fact this outbreak variant was able to spread to so many young people was due to the social environment, a place where lots of close social mixing takes place." Speaking exclusively to the BBC, she said bacteria are known to undergo changes like this, known as horizontal gene transfer. Such changes can make infections more severe, and may mean they get past the immune system because people haven't encountered them before. These events, while rare and unpredictable, could happen again, so experts "should not take their eye off the ball", she added. Scientists say speed and severity of the Kent outbreak was very unusual. It was described as "unprecedented" and "explosive" at the time, with so many infections happening in one place and over a very short period. Two people died - a 21-year-old University of Kent student and Juliette Kenny, a sixth-form pupil at Queen Elizabeth's Grammar School in Faversham. The outbreak is thought to have started in a nightclub called Club Chemistry in the city centre, which was popular with university students. It's likely one person brought the infection in with them, and then it spread that evening. Meningitis is passed through close contact - including kissing and sharing drinks or vapes. Dr Rodrigues suspects the very same genetic changes that made the strain so dangerous may also explain why the outbreak was short-lived and did not continue to spread. People were generally too sick to be silent carriers who can pass it on unknowingly to others. Following the Kent outbreak, a one-off menB vaccination programme was launched to protect young people heading to university this autumn. In July, the Joint Committee on Vaccination and Immunisation (JCVI) also recommended that teenagers should be offered the jab on the NHS around the age of 15, with catch-up programmes for those who would otherwise miss out.

中文概览

中文标题： 科学家发现为何肯特脑膜炎疫情如此严重

路透社报道，科学家查明今年早些时候英国肯特郡暴发该国最严重的B型脑膜炎疫情为何危险：20多名年轻人多为学生感染，与坎特伯雷一家夜店相关，所有人需住院，9人进重症监护，2人死亡。UKHSA与牛津大学分析细菌DNA，发现它从部分人喉部常见细菌获得遗传物质，形成新变异株并在夜店人群传播，导致重症。专家强调目前面向超百万即将上大学年轻人的脑膜炎疫苗可提供保护，称此类事件罕见但可能再次发生。

  • 情报分类：综合情报
  • 分类依据：英国肯特脑膜炎疫情基因研究，属健康新闻，无对应分类，归综合
  • 信息来源：英语新闻 / BBC News Top Stories
  • 发布时间：2026/9/22 08:00:04