Pediatric Meningococcal Infections Follow-up
- Author: Saul N Faust, MA, MBBS, PhD, MRCPCH; Chief Editor: Russell W Steele, MD more...
Further Inpatient Care
- If shock or increased intracranial pressure (ICP) is present in patients with meningococcal infections, experienced staff should transfer the child to a pediatric intensive care unit as soon as possible.
- Initially manage simple meningitis or sepsis that requires minimal intervention with regular cardiovascular (eg, pulse, blood pressure, capillary refill time) and neurological observation. Later, transfer the pediatric patient to a general medical pediatric ward if possible.
Further Outpatient Care
Follow-up care at least 6 weeks after meningococcal infection should include the following:
- Ongoing management of specific complications such as amputations, skin grafting, or renal failure
- Full physical examination
- Assessment of plasma complement levels (eg, total hemolytic complement, C3, and C4, with or without properdin)
- Serological confirmation of the diagnosis if no diagnosis was made at the time of presentation
- Audiologic function testing
- Basic assessment psychological status after intensive care, if relevant
- Possible vaccination of contacts if an outbreak of group A, C, Y, or W135 disease occurs
Transfer
- Transfer to a pediatric intensive care unit is necessary in approximately 20% of pediatric cases.
- After extubation, transfer pediatric patients to a general pediatric ward.
Deterrence/Prevention
- Prevention of secondary cases
- Household contacts of patients with meningococcal disease are 100-800 times more likely to contract the disease than the general population in the year after the index case. Risk of secondary cases in contacts decreases with time.
- Chemoprophylaxis with rifampicin, ciprofloxacin, or ceftriaxone is currently offered to household and intimate contacts of the index case if meningococcal disease is suspected or proven. Ceftriaxone is preferred in children who refuse oral medication and may be used in pregnancy.
- Current UK guidelines advise chemoprophylaxis be given only to household contacts (including those living or sleeping in the same house, pupils in the same dormitory, boyfriends/girlfriends, and university students sharing the same kitchen in halls of residence). Anyone who has had a transient close contact with the patient and has been directly exposed to respiratory secretions around the time of admission to the hospital should also receive prophylaxis. Other contacts do not require prophylaxis because the benefits of giving antibiotics in this setting are unknown; clusters in these settings are rare, and harm may arise from drug side effects, development of antibiotic resistance, and eradication of nonpathogenic organisms that may generate cross-protective immunity.
- US guidelines recommend chemoprophylaxis be given to individuals in childcare facilities or nurseries who had contact with the patient in the 7 days before the illness onset and also be given to any contacts who have had direct exposure to secretions from the patient, such as kissing or sharing toothbrushes or eating utensils, during the 7 days before the illness onset. In addition, those who have frequently eaten or slept in the same dwelling as the patient in the preceding 7 days should be given prophylaxis.
- Chemoprophylaxis is recommended for health care workers who are exposed to aerosol secretions from the patient (eg, those performing tracheal intubation) because they are 25 times more likely to contract the disease than the general population.
- Because the rate of disease in secondary contacts is highest immediately after the onset of the disease in the patient, chemoprophylaxis should be administered as soon as possible, preferably within 24 hours. If chemoprophylaxis is delayed by more than 14 days, it is probably of limited value but is still recommended until 4 weeks after the patient's presentation.
- Close contacts of patients with proven group C meningococcal infection should receive the protein-polysaccharide conjugate group C vaccine or the A/C polysaccharide vaccine.
- Antibiotic chemoprophylaxis of N meningitides may involve the use of rifampicin, ceftriaxone, and/or ciprofloxacin (adults only).
- Vaccination[27, 28]
- Meningococci are gram-negative diplococci. Pathogenic strains are enveloped in a polysaccharide capsule, which facilitates invasion and which is an obvious target for candidate vaccines. The serogroup of the organism is assigned from the reaction of sera to the polysaccharide capsule.
- Purified polysaccharide vaccines against encapsulated bacteria, such as meningococci, Haemophilus, and pneumococci, are poorly immunogenic in young children. Protein-polysaccharide conjugate vaccines for H influenzae type B are protective in infants and have greatly reduced the prevalence of disease caused by this organism.
- The conjugate vaccine for group C meningococci contains serogroup C meningococcal polysaccharide is conjugated to the protein CRM197. It appears to be immunogenic in young children and was administered to all children during 1999-2000 in the United Kingdom. In January 2001, the short-term effectiveness of this vaccine in England was reported to be 97% (95% confidence interval [CI]: 77%, 99%) for teenagers and 92% (95% CI: 65%, 98%) for toddlers. These early results confirm the superiority of this vaccine compared with plain C polysaccharide vaccines, which are ineffective in young children.
- The UK immunization schedule has recently changed to include a meningococcal booster at 12 months (combined with Hib booster) because studies showed that the efficacy of the vaccine declined at 1 year to around 80%.
- In the United States, 2 meningococcal vaccines are available. MPSV4 (meningococcal polysaccharide vaccine) is recommended for use only in individuals aged 2-10 years who are at increased risk of meningococcal disease, such as those with terminal complement deficiencies and asplenia. The conjugate vaccine (MCV4) is also approved for individuals aged 9 months to 55 years who are at increased risk.[29] Additionally, the conjugate vaccine MCV4 is given to all children aged 11-12 years or at entry to high school or college if previously unvaccinated.
- Purified polysaccharide is not a good immunogen in young children, and the previously approved meningococcal vaccines (A, C, Y, and W135 or A and C) are used only to protect travelers, for prophylaxis of household contacts of patients with proven serogroup C disease, or to control outbreaks of serogroup C disease in discrete communities.
- Vaccines against group B serotypes are difficult to make. Because the polysaccharide capsule of the group B meningococcus is chemically and antigenically identical to human brain and fetal antigens, it is poorly immunogenic in humans, and its use might induce autoimmunity.
- Other bacterial components, such as bacterial outer membrane proteins, are being investigated for use in vaccines. Vaccines have been prepared by using simple complexes of these proteins. Recent vaccines involve outer membrane vesicles and contain outer membrane proteins in spheres of the bacterial lipid membrane.
- Although some serogroup B vaccine trials demonstrate an overall efficacy of more than 50%, protection for the most vulnerable age group has not been demonstrated. In those individuals with a detectable immune response, serum bactericidal activity after vaccination seems to be limited to the strain in the vaccine.
Complications
Complications of meningococcal infection may include the following:
- Cardiorespiratory failure that requires tracheal intubation and inotropic support
- Renal failure that requires hemofiltration, hemodialysis, or peritoneal dialysis
- Neurological failure
- Severe peripheral gangrene that leads to skin grafting and (late) amputation
- Peritoneal compartment syndrome due to severe abdominal capillary leak that requires placement of a tap
- Immune complex disease leading to arthritis, pericarditis, myocarditis, and pneumonitis 10-14 days after the primary infection
- Psychological disturbance after intensive care or complications
Prognosis
- A case-control study examined outcomes in adolescent patients and found that they had poorer mental health, social support, quality of life, and educational outcomes, as well as greater fatigue than well-matched controls.[30]
- Isolated meningococcal meningitis (5% mortality rate) has a better prognosis than meningococcal septicemia (10-40% mortality rate).
- Specialty units in geographical areas with a high incidence now have mortality rates of less than 5%.
- In the United Kingdom, approximately 5% of survivors will have neurological sequelae, mainly sensorineural deafness. Amputation or skin grafting due to digital or limb ischaemia and severe skin necrosis may be required in 2-5% of survivors.
- In the United States in 2005, a study reported 11-19% of survivors had serious health sequelae, including sensorineural hearing loss, amputations, and cognitive impairment.
- A recent study from the Netherlands showed 35% of patients had some degree of neurological impairment; the largest proportion of these impairment symptoms was chronic headache.[31]
- Another study from the Netherlands examined skin scarring and orthopaedic sequelae following meningococcal septic shock; 48% of children had skin scarring, ranging from extremely disfiguring scars to those that were barely visible, 14% of patients had orthopaedic sequelae, 8% had had amputations, and 6% had lower limb length discrepancy (more common in younger patients at age of meningococcal disease). Patients with scars or orthopaedic sequelae had significantly higher illness severity scores.[32]
Patient Education
- Health education improves public recognition of a nonblanching rash and was instrumental in reducing mortality in the United Kingdom.
- Parents readily recognize the tumbler test; if a rash does not fade when a glass tumbler is pressed against the skin, the rash is nonblanching, and medical advice should be sought immediately.
- Further information is available from the charities and patient-support organizations such as the Meningitis Research Foundation (MRF) and The National Meningitis Trust.
- For excellent patient education resources, visit eMedicine's Children's Health Center and Brain and Nervous System Center. Also, see eMedicine's patient education articles Meningitis in Children and Brain Infection.
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