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Meningococcal group Y pneumonia in an adolescent female
Abstract:
Neisseria meningitidis group Y has been considered to be an uncommon pathogen. Meningococcal group Y disease has recently been reported with increased frequency in military training camps coincident with the routine use of meningococcal group C vaccine. Pneumonia produced by the group Y organism may mimic disease caused by common respiratory tract pathogens, and isolation by routine methods may be difficult. A 16-year-old asthmatic female developed lobar pneumonia secondary to N meningitidis group Y while on alternate day steroids. We speculate that neither steroid therapy nor an isolated serum IgA deficiency in the presence of secretory IgA discovered after her recovery predisposed her to sinopulmonary disease. The true incidence of group Y disease is unknown. Awareness of its potential pathogenicity may have clinical significance with the availability of a group Y vaccine.
Insights
Neisseria meningitidis group Y (meningococcal Y) is an uncommon pathogen causing disease, particularly pneumonia. Increased cases in military settings and a case of pneumonia in an asthmatic suggest its growing clinical significance.
Area of Science:
- Infectious Diseases
- Bacteriology
- Vaccinology
Background:
- Neisseria meningitidis group Y (meningococcal Y) is historically considered uncommon.
- Increased frequency of meningococcal Y disease reported in military training camps.
- Coincidental rise with routine use of meningococcal group C vaccine.
Observation:
- Meningococcal Y pneumonia can mimic common respiratory pathogens.
- Isolation of meningococcal Y may be challenging with standard methods.
- A 16-year-old asthmatic on steroids developed lobar pneumonia due to meningococcal Y.
Findings:
- Steroid therapy and IgA deficiency were not conclusively linked to sinopulmonary disease in this case.
- The true incidence of meningococcal Y disease remains unknown.
- Meningococcal Y is an emerging pathogen with potential clinical significance.
Implications:
- Increased awareness of meningococcal Y pathogenicity is crucial for clinicians.
- The availability of a group Y vaccine may impact disease prevention strategies.
- Further research is needed to determine the true incidence and risk factors for meningococcal Y disease.