Meningitis B Outbreak: Symptoms, Vaccine & Kent Cases – What You Need to Know

The recent outbreak of meningitis in Kent, England, has tragically resulted in two deaths – a university student and a school pupil – and left eleven others seriously ill. Health officials have confirmed that meningitis B is the strain responsible for some of the cases, prompting urgent health advisories and raising concerns among students and families. Understanding the nature of this infection, how it spreads, and the available preventative measures is crucial during this unsettling time.

What is Meningitis B?

Meningitis refers to inflammation of the protective membranes surrounding the brain and spinal cord. It can be caused by a variety of infectious agents, including bacteria, viruses, and, less commonly, fungi. Meningitis B, caused by the bacterium Neisseria meningitidis (often called the meningococcus), is the most prevalent form of invasive meningococcal disease. Whereas the bacteria frequently resides harmlessly in the throats of many individuals, it can, in certain instances, invade the bloodstream or central nervous system, leading to severe and potentially life-threatening illness.

Recognizing the Symptoms

Meningitis B can progress with alarming speed, making early recognition vital. Initial symptoms aren’t always present, but when they do appear, they can include a sudden high fever, a stiff neck, a severe and worsening headache, and a characteristic rash that doesn’t fade when pressed with a glass. Other potential indicators include an aversion to bright lights, vomiting and diarrhoea, seizures, joint and muscle pain, delirium, and excessive sleepiness. It’s important to remember that not all symptoms will be present in every case, and the presentation can vary.

The Severity of the Infection

Meningitis B carries a significant risk of fatality. The bacteria can trigger inflammation of the brain’s lining and lead to septicaemia (blood poisoning), which can rapidly escalate to sepsis. While prompt treatment with antibiotics generally leads to a full recovery, approximately one in ten individuals infected with the bacteria succumb to the illness. Even those who survive can experience long-term complications, such as hearing loss, amputation, epilepsy, or learning disabilities.

How Meningitis B Spreads

The transmission of Meningitis B typically occurs through close, prolonged contact, such as coughing, sneezing, and kissing. According to Professor Paul Hunter at the Norwich School of Medicine, University of East Anglia, the increased risk observed among teenagers is often linked to changes in living arrangements and increased social interaction. “About 10% of people carry the bacteria at any one time and This represents even higher in adolescents,” he explains. The infection is spread during close contact, like sharing a household or through kissing.

There’s typically a delay between exposure and the onset of symptoms, usually less than a week, but potentially up to ten days. Public health responses are scaled based on the number of cases. A single case prompts contact tracing and antibiotic administration to immediate family members. Two cases within a class may trigger antibiotic treatment for the entire class. Two cases in a school, even in separate classes, could lead to antibiotics being offered to the whole school. Professor Hunter emphasizes the speed with which the illness can progress: “You can go from being mildly ill walking around to being dead in less than a day.”

Current Outbreak Context

While clusters of meningitis cases aren’t uncommon – typically around 300-400 cases of invasive meningitis are recorded annually in the UK – the scale of the current outbreak in Kent is unusual. The cause of this larger-than-usual cluster remains unclear. It could be due to a newly virulent strain of the bacteria, or potentially linked to gatherings at a specific location, such as the nightclub mentioned in reports. Students have expressed fear and anxiety as information about the outbreak spreads.

Treatment Options

Treatment for meningitis B involves the administration of antibiotics, intravenous fluids to maintain hydration, oxygen support if breathing is compromised, and, in some cases, steroid medication to reduce inflammation around the brain. Early intervention is critical to improving outcomes.

Vaccination and Prevention

Since 2015, the MenB vaccine has been part of the routine childhood immunization schedule in the UK, administered at eight and twelve weeks of age, with a booster dose at one year. Other routine childhood vaccinations, including the 6-in-1 and pneumococcal vaccines, also offer protection against certain types of meningitis. The MenACWY vaccine, protecting against four other meningococcal groups, is offered to teenagers in school years 9 and 10 and is available up to age 25. However, individuals born before 2015 may not have received the MenB vaccine.

The Question of Teen Vaccination

The decision to include the MenB vaccine in the routine adolescent immunization schedule is made by the Joint Committee on Vaccination and Immunisation (JCVI), based on ongoing research into disease prevalence, vaccine effectiveness, and cost-effectiveness. While MenB accounts for a significant proportion of invasive meningococcal disease cases, the JCVI has historically not recommended routine MenB vaccination for teenagers due to factors such as the lack of long-lasting protection and the inability of the vaccine to prevent bacterial carriage and transmission.

Meningitis Now advocates for NHS vaccination of young people against meningitis B, prioritizing those at highest risk, followed by a booster program for teenagers starting in 2030. Private vaccinations are available, costing between £100 and £120 per dose, or approximately £200-£240 for a full course.

Should Those Near the Outbreak Be Vaccinated?

Some experts suggest that a catch-up vaccination program could help mitigate the risk of further outbreaks. Professor Emma Wall, clinical research group leader at the Crick, and clinical professor of infectious diseases at the Blizard Institute, QMUL, notes: “Vaccination can be a very useful tool to reduce onward transmission of this bacteria and reduce the risk of a secondary outbreak in students or related communities. Protection from the vaccine is rapid.”

What to Do If You Suspect Exposure

The UK Health Security Agency (UKHSA) urges anyone experiencing symptoms of meningitis or septicaemia to seek immediate medical attention at the nearest A&E department or by calling 999. Individuals who attended Club Chemistry in Canterbury between March 5th and 7th are advised to seek antibiotic treatment as a precautionary measure.

Staying informed through official public health updates and seeking medical advice promptly if symptoms develop are the most important steps individuals can take during this time.