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Atypical measles syndrome: unusual hepatic, pulmonary, and immunologic aspects
Abstract:
The atypical measles syndrome is a relatively new disease that was first recognized 15 years ago. Initially, it occurred in children who were exposed to wild measles virus several years after they were immunized with killed measles vaccine. It was characterized by a two- to three-day prodrome of high fever, cough, headache, and myalgia followed by a rash that resembled Rocky Mountain spotted fever, scarlet fever, or varicella and associated with roentgenographic evidence of pneumonia with or without pleural effusion. This report highlights three unusual manifestations of this syndrome: 1) transient hepatitis, 2) persistence of pulmonary lesions for several years, and 3) occurrence of excessively high measles hemagglutination-inhibition antibody titers. Today, this syndrome occurs predominantly in adolescents and young adults.
Insights
Atypical measles syndrome, a rare condition from killed measles vaccines, presents with fever, cough, and pneumonia. Unusual cases show liver issues, long-term lung damage, and high antibody levels.
Area of Science:
- Immunology
- Virology
- Pediatrics
Background:
- Atypical measles syndrome emerged 15 years ago, primarily in children previously vaccinated with killed measles vaccine and later exposed to wild measles virus.
- The syndrome initially presented with a prodrome of fever, cough, headache, and myalgia, followed by a rash resembling other febrile illnesses and pneumonia.
Observation:
- This report details three uncommon presentations of atypical measles syndrome.
- These include transient hepatitis, prolonged pulmonary lesions lasting several years, and exceptionally high measles hemagglutination-inhibition antibody titers.
Findings:
- The syndrome, initially observed in children, now predominantly affects adolescents and young adults.
- The characteristic rash and pneumonia can mimic other infectious diseases.
- Persistent pulmonary lesions and hepatitis represent significant, albeit rare, complications.
Implications:
- Understanding these atypical presentations is crucial for accurate diagnosis and management.
- The evolving epidemiology suggests a need for ongoing surveillance of measles vaccine-related syndromes.
- Further research into the immunological mechanisms underlying atypical measles is warranted.