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    Meningitis explained: symptoms, types, treatment and prevention

    Meningitis is an infection of the protective layers around the brain and spinal cord. Bacteria, viruses, fungi and parasites can all cause it.[1][2] Bacterial meningitis is the most dangerous type: about 1 in 6 people who get it die. Vaccines against meningococcus, pneumococcus and Hib protect against the most common bacterial causes.[3][4]

    Editor reviewedStrict sourcingUpdated ExplainerHealth and medicine, Life sciences

    Meningitis is an infection of the protective layers that cover the brain and spinal cord. It can be life-threatening if not treated quickly.[1] It is in the news in 2026 after unusual MenB outbreaks among young people in England and a rise in meningococcal cases in the US (see our tracker).[5][6] This page is general information, not medical advice. If you suspect meningitis, seek emergency care at once, and talk to a clinician about vaccination.

    Types and causes

    Many germs can cause meningitis, including bacteria, viruses, fungi and parasites.[2] Viral meningitis usually clears up on its own within 7 to 10 days. Bacterial meningitis needs hospital treatment.[7] Bacterial meningitis is the most dangerous kind: about 1 in 6 people who get it die, and 1 in 5 have severe complications.[3]

    The likely bacterial cause depends on age. Group B streptococcus dominates in newborns. Meningococcus (Neisseria meningitidis), pneumococcus (Streptococcus pneumoniae) and Haemophilus influenzae are the main threats in children and adolescents, and pneumococcus and meningococcus cause most adult bacterial meningitis.[8] These bacteria live in the nose and throat and spread through respiratory particles or throat secretions. Carriage is usually harmless and helps build immunity, but occasionally the bacteria invade.[9] Meningococcal strains are grouped into serogroups, including A, B, C, W, X and Y (see neisseria-meningitidis).[10]

    Symptoms and warning signs

    Common symptoms are fever, neck stiffness, confusion, headache, sensitivity to light, nausea and vomiting.[11] Early symptoms can look like flu, a stomach bug or a hangover. The NHS says to get medical help immediately if you think someone might have meningitis.[12] Meningococcal disease can begin like flu and then worsen rapidly.[13]

    When meningococcal bacteria cause sepsis, a rash may appear that does not fade when the side of a clear glass is pressed firmly against it. The rash can be harder to see on brown or black skin, and not everyone gets one, so the absence of a rash is not reassurance.[14]

    Diagnosis and treatment

    WHO describes meningitis as a medical emergency. Antibiotics should start as soon as bacterial meningitis is suspected, without waiting for the results of a lumbar puncture, the test that samples spinal fluid.[15] Even with treatment, 10 to 15 in 100 people with meningococcal disease die.[16] About one in five survivors of bacterial meningitis may have lasting effects such as hearing loss, seizures, limb weakness, or problems with vision, speech or memory.[17]

    Prevention

    Vaccines are the main protection against bacterial meningitis, but each protects only against certain strains and none covers every cause.[4][18] In the UK, children and teenagers are offered MenB, MenACWY, pneumococcal, 6-in-1 and MMRV vaccines, which protect against the main causes.[19] People in close contact with a meningococcal case are given antibiotics to stop them getting ill.[20]

    The CDC says vaccines exist against four bacteria that cause meningitis and are the most effective protection against those types.[18] Hib vaccine is in most national childhood programmes, and WHO recommends universal use of pneumococcal conjugate vaccines.[21] Meningococcal vaccines come as conjugate vaccines against A, C, W and Y (and X in some products), protein vaccines against B, and pentavalent combinations. Our vaccines guide compares them.[22][23] Maternal group B streptococcus vaccines are in late-stage development.[24]

    Where meningitis strikes hardest

    The highest burden is in the African “meningitis belt”, which stretches from Senegal to Ethiopia. In 2025, countries in its surveillance network reported 21,526 suspected cases and 971 deaths.[25] A serogroup A conjugate vaccine rolled out from 2010 cut confirmed serogroup A disease by 99% in vaccinated populations.[26] Outbreaks are also more likely in crowded settings such as mass gatherings and closed institutions.[27] In 2020 the World Health Assembly adopted a road map to defeat meningitis by 2030.[28] For a different vaccine technology and the wider US vaccine-policy fight, see the mRNA vaccines crash course.

    Next in the crash course

    Health & medicine

    Neisseria meningitidis (meningococcus)

    Neisseria meningitidis causes meningococcal meningitis and sepsis. Its serogroups, who is at risk, US and UK trends in 2025-2026, and vaccines.

    Developing in Health

    Questions readers ask

    What are the first signs of meningitis?

    Common symptoms are fever, neck stiffness, confusion, headache, sensitivity to light, nausea and vomiting. Early symptoms can look like flu, a stomach bug or a hangover.[11][12]

    What is the glass test?

    Meningococcal sepsis can cause a rash that does not fade when the side of a clear glass is pressed firmly against it. The rash can be harder to see on brown or black skin, and not everyone gets one.[14]

    Is viral meningitis less serious than bacterial meningitis?

    Generally, yes. The NHS says viral meningitis tends to get better on its own within 7 to 10 days, while bacterial meningitis needs hospital treatment, usually for at least a week.[7]

    Is meningitis contagious?

    The bacteria that cause it are carried in the nose and throat and spread through respiratory particles or throat secretions. Meningococcal bacteria usually need close or lengthy contact to spread.[9][29]

    Can meningitis be prevented?

    Vaccines protect against the most harmful strains of meningococcus, pneumococcus and Haemophilus influenzae, but no vaccine covers every cause. Close contacts of meningococcal cases are given preventive antibiotics.[4][20]

    Does meningitis cause lasting damage?

    About one in five survivors of bacterial meningitis may have lasting effects such as hearing loss, seizures, limb weakness, or vision and memory problems.[17]

    Sources

    · 29 claims from 5 publishers

    Each numbered claim is a statement we checked against the sources listed with it. Tap a number in the text to see its sources in place.

    1. [1]

      Meningitis is an infection of the protective layers covering the brain and spinal cord, and it can be life-threatening if not treated quickly. confirmedas of 2026-10-11

    2. [2]

      Many organisms can cause meningitis, including bacteria, viruses, fungi and parasites. confirmedas of 2026-10-11

    3. [3]

      WHO says about 1 in 6 people who get bacterial meningitis die and 1 in 5 have severe complications. confirmedas of 2026-10-11

    4. [4]

      Licensed vaccines against meningococcal, pneumococcal and Haemophilus influenzae disease target the most harmful strains, and no universal meningitis vaccine exists. confirmedas of 2026-10-11

    5. [5]

      UKHSA called the Kent outbreak unusually fast, with fifteen cases emerging within 48 hours, whereas most outbreaks it manages involve 2 to 4 cases over a longer period. confirmedas of 2026-03-18

    6. [6]

      The US reported 463 confirmed and probable meningococcal cases in 2025 (preliminary), the second-highest count since 2013; cases have risen sharply since 2021, driven largely by serogroup Y, and generally peak each year in January to March. confirmedas of 2026-09-29

    7. [7]

      The NHS says viral meningitis tends to get better on its own within 7 to 10 days, while bacterial meningitis needs hospital treatment, usually for at least a week. confirmedas of 2026-10-11

    8. [8]

      Newborns are most at risk from group B streptococcus, children and adolescents from meningococcus, pneumococcus and Haemophilus influenzae, and most adult bacterial meningitis is caused by pneumococcus and meningococcus. confirmedas of 2026-10-11

    9. [9]

      The main meningitis bacteria are carried in the human nose and throat and spread from person to person through respiratory particles or throat secretions; carriage is usually harmless. confirmedas of 2026-10-11

    10. [10]

      There are several meningococcal strains, including MenA, MenB, MenC, MenW, MenX and MenY, and serogroups B, C, W and Y cause most US cases. confirmedas of 2026-10-11

    11. [11]

      Common meningitis symptoms are fever, neck stiffness, confusion, headache, sensitivity to light, nausea and vomiting. confirmedas of 2026-10-11

    12. [12]

      Early meningitis symptoms can resemble flu, a stomach bug or a hangover, and the NHS advises getting medical help immediately if meningitis is suspected. confirmedas of 2026-10-11

    13. [13]

      Meningococcal disease can first look like a flu-like illness and then worsen rapidly. confirmedas of 2026-10-11

    14. [14]

      Meningococcal sepsis can cause a rash that does not fade when a glass is pressed against it, which can be harder to see on brown or black skin; not everyone gets a rash. confirmedas of 2026-10-11

    15. [15]

      WHO treats meningitis as a medical emergency; antibiotics should start as soon as bacterial meningitis is suspected and should not wait for lumbar puncture results. confirmedas of 2026-10-11

    16. [16]

      Even with antibiotic treatment, 10 to 15 in 100 people with meningococcal disease die, and one in five survivors has long-term disabilities. confirmedas of 2026-10-11

    17. [17]

      About one in five survivors of bacterial meningitis may have lasting after-effects such as hearing loss, seizures, limb weakness, vision or memory problems, and amputations after sepsis. confirmedas of 2026-10-11

    18. [18]

      The CDC says vaccines exist for four types of bacteria that can cause meningitis, and that vaccines are the most effective protection against certain types of bacterial meningitis. confirmedas of 2026-10-11

      • Bacterial Meningitis · US Centers for Disease Control and Prevention · 2025-09-09 (retrieved 2026-10-11)
      • Bacterial Meningitis · US Centers for Disease Control and Prevention · 2025-09-09 (retrieved 2026-10-11)
    19. [19]

      The NHS schedule offers children and teenagers vaccines against the main causes of meningitis, including MenB, MenACWY, pneumococcal, 6-in-1 and MMRV vaccines. confirmedas of 2026-10-11

    20. [20]

      Close contacts of someone with meningococcal disease are given preventive antibiotics to clear the bacteria and reduce spread. confirmedas of 2026-10-11

    21. [21]

      Hib vaccine is used in most national childhood immunisation programmes, and WHO recommends universal use of pneumococcal conjugate vaccines. confirmedas of 2026-10-11

    22. [22]

      The US uses three types of meningococcal vaccine, MenACWY, MenB and pentavalent MenABCWY, each protecting against different serogroups. confirmedas of 2026-10-11

    23. [23]

      In 2023 WHO prequalified the first pentavalent meningococcal conjugate vaccine against serogroups A, C, W, Y and X (Men5CV) for the African meningitis belt, and Niger ran the first Gavi-supported preventive Men5CV campaign in 2025. confirmedas of 2026-10-11

    24. [24]

      Maternal group B streptococcus vaccines to prevent invasive GBS disease in infants are in the final stages of clinical development. reportedas of 2026-10-11· forecast

    25. [25]

      In 2025, 24 of the 26 countries in the African meningitis belt's enhanced surveillance network reported 21,526 suspected meningitis cases and 971 deaths to WHO, a case fatality rate of 4.5%. confirmedas of 2026-10-11

    26. [26]

      Before a meningococcal A conjugate vaccine was deployed from 2010, serogroup A caused 80-85% of epidemics in the meningitis belt; mass campaigns cut confirmed serogroup A disease by 99% in vaccinated populations. confirmedas of 2026-10-11

    27. [27]

      Meningococcal meningitis outbreaks occur more often in crowded settings such as mass gatherings, refugee settings, closed institutions and military camps. confirmedas of 2026-10-11

    28. [28]

      In 2020 the World Health Assembly approved a global road map to defeat meningitis by 2030, with goals including cutting vaccine-preventable bacterial meningitis cases by 50% and deaths by 70%. confirmedas of 2026-10-11

    29. [29]

      Meningococcal bacteria spread through saliva and respiratory secretions, generally require close or lengthy contact, and are less contagious than cold or flu viruses. confirmedas of 2026-10-11

    Revision history (1)
    1. Page created.

    Created Oct 11, 2026. Last reviewed by an editor on Oct 11, 2026. Next scheduled review: Jan 11, 2027.

    Cite this page

    "Meningitis explained: symptoms, types, treatment and prevention." ContentLora, updated Oct 11, 2026. https://contentlora.com/explain/meningitis-explained

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