What Does the MenB Vaccine Protect Against?

Meningococcal group B disease is one of the most feared bacterial infections in the UK, not because it is common, but because it can move from first symptoms to life-threatening illness within hours. The MenB vaccine was introduced into the NHS childhood immunisation schedule in 2015 and remains the primary tool for protecting against this strain of bacterial meningitis. This article explains what the vaccine covers, who is eligible, and how Maple Leaf Pharmacy can help those who want vaccination outside the standard NHS schedule.

What Is Meningococcal Group B Disease?

Meningococcal disease is caused by a bacterium called Neisseria meningitidis. It exists in several strains, identified by letters. Group B is responsible for the majority of bacterial meningitis cases in the UK. According to Meningitis Now and Meningitis Research Foundation, meningococcal group B accounts for roughly 60 per cent of all meningococcal cases in the UK.

The disease can cause two distinct and serious conditions, which may occur separately or at the same time:

• Bacterial meningitis, an infection of the membranes surrounding the brain and spinal cord.
Septicaemia, also known as blood poisoning, which can cause organ failure and tissue death.

Even with prompt treatment, meningococcal disease can be fatal or leave survivors with lasting complications including hearing loss, brain damage, limb amputation and scarring. Speed of diagnosis and treatment is critical.

What Does the MenB Vaccine Protect Against?

The MenB vaccine used in the UK is called Bexsero, manufactured by GSK. It is designed to protect against invasive meningococcal group B disease, specifically the strains most prevalent in Europe and the UK. According to NHS data, the vaccine is estimated to protect against around 88 per cent of meningococcal B strains circulating in the UK, though strain variation means no vaccine offers complete coverage against every possible variant.

Bexsero does not protect against other meningococcal groups such as A, C, W or Y. These are covered by separate vaccines, including the MenACWY vaccine, which is offered to teenagers and young adults through the NHS.

The MenB vaccine does not protect against viral meningitis, which has a different cause and is generally less severe than bacterial forms.

 

Condition	Covered by MenB Vaccine?	Alternative Vaccine Available?
Meningococcal group B disease	Yes (approx. 88% of UK strains)	—
Meningococcal groups A, C, W, Y	No	Yes — MenACWY vaccine
Viral meningitis	No	No specific vaccine
Pneumococcal meningitis	No	Yes — pneumococcal vaccine (PCV)
Haemophilus influenzae meningitis	No	Yes — Hib vaccine (in 6-in-1)

 

Who Is Eligible for the MenB Vaccine on the NHS?

The NHS immunisation schedule currently offers the MenB vaccine to:

•        Babies at 8 weeks, 16 weeks and 1 year old, as part of the routine childhood immunisation programme.

•        Individuals with certain medical conditions that increase the risk of meningococcal disease, such as asplenia, splenic dysfunction or complement deficiency. These patients are offered the vaccine through their GP or specialist.

The NHS does not routinely offer the MenB vaccine to older children, teenagers or adults who fall outside these groups, even though meningococcal B disease can affect people of all ages. There is a secondary peak in incidence among teenagers and young adults, particularly those entering university or college environments.

Can You Get the MenB Vaccine Privately?

Yes. Private MenB vaccination is available for those who are not eligible under the NHS schedule or who wish to vaccinate older children and adults outside the routine programme. This includes:

•        Children who missed their NHS schedule doses.

•        Older children and teenagers, particularly ahead of starting secondary school or higher education.

•        Young adults, especially those moving into shared accommodation such as university halls.

•        Travellers to regions with higher rates of meningococcal disease.

•        Parents who want their child vaccinated earlier or on an alternative schedule.

At Maple Leaf Pharmacy, we can advise on private MenB vaccination and help you understand whether it is appropriate for your circumstances. Speak to our pharmacy team or book a consultation to discuss your options.

What Are the Benefits of the MenB Vaccine?

Since the introduction of Bexsero into the NHS schedule in 2015, cases of meningococcal B disease in eligible age groups have fallen significantly. Public Health England data showed a reduction of around 50 per cent in confirmed MenB cases in infants in the years following introduction of the programme.

The key benefits of MenB vaccine protection include:

•        Significantly reduced risk of invasive meningococcal B disease in vaccinated individuals.

•        Reduced risk of severe complications including brain damage, hearing loss and limb loss.

•        Contribution to herd immunity, reducing transmission within communities.

•        Peace of mind for parents and individuals in higher-risk groups or environments.

No vaccine is 100 per cent effective, and vaccinated individuals should still be aware of meningitis symptoms. However, vaccination remains the most effective available measure for meningitis B prevention.

Recognising Meningitis B Symptoms

Even for vaccinated individuals, knowing the warning signs of meningococcal disease is important. Symptoms can develop rapidly and may not all appear at once.

In Babies and Young Children

•        A high-pitched, unusual cry or moaning.

•        Bulging fontanelle (the soft spot on the top of the head).

•        Floppy, unresponsive or difficult to wake.

•        Refusing feeds or vomiting.

•        Pale, blotchy or blue-tinged skin.

•        Fever, with cold hands and feet.

In Older Children and Adults

•        Sudden, severe headache.

•        Stiff neck.

•        Sensitivity to light.

•        High fever with cold extremities.

•        Nausea and vomiting.

•        A rash of red or purple spots or patches that does not fade when pressed with a glass.

The non-blanching rash is a sign of septicaemia and requires immediate emergency attention. Call 999 or go to A&E without delay. For a full symptom guide, visit Meningitis Research Foundation.

Get MenB Vaccination Advice at Maple Leaf Pharmacy

Whether you are asking about your child's NHS schedule, seeking private vaccination for an older child or teenager, or simply want to understand your options, our team at Maple Leaf Pharmacy is here to help. We serve patients across Richmond, Hampton, Teddington, Isleworth, Twickenham and Whitton. Book a consultation or visit us in person to discuss MenB vaccination.

Frequently Asked Questions (FAQ)

What does the MenB vaccine protect against?

It protects against invasive disease caused by meningococcal group B bacteria, which is the most common cause of bacterial meningitis in the UK, covering approximately 88 per cent of circulating UK strains.

Is the MenB vaccine free on the NHS?

Yes, for babies at 8 weeks, 16 weeks and 1 year old, and for individuals with certain medical conditions. It is not routinely offered free to older children, teenagers or adults outside these groups.

Can older children and adults get the MenB vaccine?

Yes, through private vaccination. The NHS does not routinely offer MenB to those outside the infant schedule, but private vaccination is available for older children, teenagers and adults who want protection.

Does the MenB vaccine protect against all types of meningitis?

No. It covers meningococcal group B only. Separate vaccines are available for groups A, C, W and Y (MenACWY), pneumococcal meningitis and Haemophilus influenzae type b.

What are the common side effects of the MenB vaccine?

Common side effects include redness, swelling and tenderness at the injection site, fever, irritability and drowsiness, particularly in infants. The NHS recommends giving infant paracetamol after each of the first two doses to reduce the risk of fever.

How do I know if my child has had their MenB vaccine?

Check your child's Red Book (Personal Child Health Record), which records all vaccinations given as part of the NHS schedule. If you are unsure, your GP practice can confirm the vaccination history.