The Basics
What Causes Meningitis B?
Meningitis B is a life-threatening disease caused by the Neisseria meningitidis group B bacteria. It is the leading cause of bacterial meningitis and septicaemia (blood poisoning) in many parts of the world. The bacteria live in the back of the nose and throat of about 1 in 10 people without causing illness, but they can occasionally invade the body and cause severe inflammation of the membranes surrounding the brain and spinal cord. It is spread through close contact, such as coughing, sneezing, or kissing.
Vaccination Overview
The Meningitis B Vaccine (Bexsero)
| Feature | Details |
| Name of Vaccine | Bexsero (the most common brand). |
| Number of Doses | Infants: 3 doses (standard UK schedule). Adults/Children over 2: 2 doses. |
| Schedule (Adults/Teens) | The second dose is given at least 1 month after the first. |
| When to get it | Part of the routine infant schedule, but highly recommended for adolescents, university students, and those with certain health conditions. |
| How it is given | Administered as an injection into the muscle (thigh for infants, upper arm for adults). |
| Suitable Age | Suitable for infants from 8 weeks of age through to adulthood. |
Safety & Side Effects
What to Expect After Vaccination
The Meningitis B vaccine is effective but is known to be “reactogenic,” meaning it often causes a temporary reaction as the body builds immunity:
Fever: High fever is very common in infants (doctors usually recommend liquid paracetamol at the time of vaccination).
Local Reaction: Pain, redness, or a hard lump at the injection site (occurs in the majority of people).
General: Feeling tired, irritable, or having muscle aches for 24–48 hours.
Recognising Symptoms
Symptoms of Meningitis B
Symptoms develop rapidly—often within hours. This is a medical emergency. Do not wait for a rash to appear before seeking help.
Sudden High Fever: Accompanied by very cold hands and feet.
Severe Headache: Often accompanied by a stiff neck and sensitivity to light (photophobia).
The Rash: Small red/purple “pinprick” spots that develop into larger bruises. These do not fade under pressure (the “Glass Test”).
Neurological Signs: Confusion, drowsiness, or difficulty waking up.
In Babies: A high-pitched moaning cry, a bulging fontanelle (soft spot), or a stiff, jerky body.
Additional Precautions
Staying Meningitis Aware
The “Glass Test”: If you see a rash, press a clear glass firmly against it. If the spots do not fade and remain visible through the glass, seek emergency medical help immediately.
Check Your Coverage: Remember that the MenACWY vaccine does not protect against Meningitis B. You need both vaccines for broad protection.
Student Safety: University students are at higher risk due to living in close quarters. Ensure you are vaccinated before starting your first term.
Others Services
FAQ
Why isn't this vaccine combined with the MenACWY shot?
The technology used to create the Meningitis B vaccine is different from the ACWY vaccine. Currently, they must be administered as separate injections.
If I had the Men B vaccine as a baby, do I need it again for university?
If you completed the full infant course, you have good protection. However, if you are at high risk or missed any doses, a “catch-up” or booster may be discussed with your healthcare provider.
Medical Disclaimer
The information provided on this website is for educational and informational purposes only and is not intended as medical advice, diagnosis, or treatment. While we strive to provide accurate health information, it is not a substitute for the professional judgment of a healthcare provider. Always seek the advice of your physician or other qualified health professional with any questions you may have regarding a medical condition or vaccination schedule. Never disregard professional medical advice or delay seeking it because of something you have read on this website.