eMedicine Specialties > Dermatology > Bacterial Infections
Meningococcemia: Follow-up
Updated: Sep 11, 2009
Follow-up
Deterrence/Prevention
- Vaccines have been developed that consist of purified capsular polysaccharide.
- The currently available quadrivalent vaccine contains polysaccharide from serogroups A, C, Y, and W-135. This vaccine is recommended for military personnel and patients younger than 2 years with terminal complement deficiencies or anatomic or functional asplenia. Since the start of vaccination against serogroup C, the prevalence of this disease has decreased.
- The development of an effective serogroup B vaccine is ongoing. A vaccine that combines meningococcal serogroups B and C is under development.15
- Routine vaccination of civilians with the quadrivalent meningococcal vaccine is not recommended because of its relative ineffectiveness in children younger than 2 years and its relatively short duration of action (approximately 3 y).
- Antimicrobial chemoprophylaxis is recommended for close contacts of patients with meningococcal disease and is the primary means of prevention in the United States.
- Close contacts include household members, day care center classmates, and anyone exposed to the patient's respiratory secretions.
- Institute antimicrobial chemoprophylaxis as soon as possible because the rate of secondary disease is highest in the first few days after the onset of disease in the index case.
- Current adult recommendations include rifampin at 600 mg orally twice daily for 2 days.
- In addition to rifampin, other antimicrobial agents are effective in reducing nasopharyngeal colonization with N meningitidis.
- Ciprofloxacin and ofloxacin are effective single-dose oral substitutes.
- Ceftriaxone is available for parenteral single-dose use in children and adults.
- These medications achieve adequate concentrations in upper respiratory tract secretions and are reasonable alternatives to the multidose rifampin regimen for chemoprophylaxis.
Complications
- Complications of meningococcemia may occur at the time of acute disease or during the recovery phase.
- Meningococcal arthritis occurs with acute bacteremia in up to 10% of adult cases.
- Up to 5% of patients develop a nonpurulent pericarditis with substernal chest pain and dyspnea approximately 1 week after the onset of illness. Involvement of the pericardium in meningococcal disease is a well-recognized but rare complication. It has been described with N meningitidis serotypes C, B, W135, and Y.16
- Neurologic complications (including peripheral neuropathy) have also been documented.
- Long-term complications in patients who survive fulminant meningococcemia are related to permanent musculoskeletal sequelae.
- Amputation may be required for extensive tissue necrosis of the limbs.
Prognosis
- Several investigators have identified unfavorable prognostic features in patients with meningococcemia using clinical and laboratory parameters at the time of hospitalization.
- A mortality rate of 40-80% is associated with the acute onset of petechiae less than 12 hours before admission, shock, coma, high fever, low peripheral leukocyte count, thrombocytopenia, high serum antigen titer, absence of meningitis, metabolic acidosis, and disseminated intravascular coagulation (DIC).
- Cases of fulminant meningococcemia can also be associated with the complication of massive adrenal hemorrhage (Waterhouse-Friderichsen syndrome). In these cases, the mortality rate is close to 100%.
Patient Education
- For excellent patient education resources, see eMedicine's Bacterial and Viral Infections Center. Also, see eMedicine's articles Meningitis in Adults and Meningitis in Children.
Miscellaneous
Special Concerns
- Chronic meningococcemia is a rare (<200 documented cases) clinical presentation of N meningitidis most often observed in adults.
- Rare case reports associate chronic meningococcemia with the absence of a terminal component of complement. Clinically, it can be confused with the dermatitis-arthritis syndrome associated with subacute gonococcemia. The presentation is that of recurrent attacks of fever associated with migratory arthralgias, arthritis, and leukocytosis. These attacks may recur over a period of 6-8 months. Cutaneous manifestations are variable and include rose-colored macules and papules, indurated nodules, petechiae, purpura, or large hemorrhagic areas.
- The diagnosis of chronic meningococcemia is confirmed with identification of N meningitidis from blood cultures. The blood culture should be performed during febrile episodes to ensure a correct diagnosis. Multiple cultures are often necessary to confirm bacteremia because of the high rate of false-negative test results. Alternatively, a novel N meningitidis specific polymerase chain reaction assay performed on skin biopsy specimens may prove to be helpful for this diagnostic challenge.17
- Chronic meningococcemia differs histopathologically from acute meningococcemia in that no bacteria are present, thrombi do not occlude capillaries and venules, and endothelial swelling does not occur. The most common finding in a person with chronic meningococcemia is a leukocytoclastic angiitis.
- The course of chronic meningococcemia is as variable as the cutaneous findings. Patients may recover spontaneously or progress to systemic complications such as meningitis. The prognosis for treated patients is excellent, with a cure rate of nearly 100% with appropriate antibiotic therapy. Penicillin G at 6-12 million U/d in divided doses for a minimum of 7 days is effective therapy.
More on Meningococcemia |
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| Differential Diagnoses & Workup: Meningococcemia |
| Treatment & Medication: Meningococcemia |
Follow-up: Meningococcemia |
| References |
| « Previous Page |
References
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Further Reading
Keywords
meningococcemia, meningococcal sepsis, meningococcal disease, meningococcal infection, meningitis, bacteremia, meningococcemia, acute meningococcal septicemia, adrenal hemorrhage, Waterhouse-Friderichsen syndrome, meningococcal septicemia
Follow-up: Meningococcemia