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Measles in adults. An unforeseen consequence of immunization?
Abstract:
An outbreak of measles occurred in California in the first half of 1975, especially in the San Francisco Bay area. Of four adult patients with complicated cases, two were receiving immunosuppressive chemotherapy, and both died from a giant-cell pneumonia. The clinical presentation in such cases may be atypical, and special viral isolation and immunofluorescent techniques may be diagnostically helpful. A significant (P less than .0005) trend toward the occurrence of measles in adolescents was observed in this epidemic, which may also occur in future epidemics elsewhere. With wide spread but incomplete immunization, it is possible for the nonimmunized to reach adulthood without acquiring natural infection. As a result, internists as well as pediatricians will have to consider the possibility of measles and be aware of its serious potential in the immunosuppressed patient.
Insights
A 1975 measles outbreak in California highlighted a concerning trend of adult cases. Immunosuppressed patients faced severe outcomes, including fatal giant-cell pneumonia, emphasizing the need for broader clinical awareness.
Area of Science:
- Epidemiology
- Infectious Diseases
- Virology
Background:
- Measles outbreaks can occur even with widespread vaccination programs.
- Incomplete immunization can lead to susceptible adult populations.
- Adult measles cases, particularly in complex scenarios, require careful consideration.
Observation:
- A 1975 measles epidemic in California disproportionately affected adolescents and adults.
- Complicated cases in adults included fatal giant-cell pneumonia in two patients undergoing immunosuppressive chemotherapy.
- Atypical clinical presentations necessitate advanced diagnostic methods like viral isolation and immunofluorescence.
Findings:
- A statistically significant increase in measles cases among adolescents was observed during the epidemic (P < .0005).
- Immunosuppressed adults are at high risk for severe measles complications, including fatal pneumonia.
- Diagnostic challenges in atypical cases underscore the importance of specialized virological techniques.
Implications:
- Physicians, including internists and pediatricians, must consider measles in adult differential diagnoses.
- Enhanced vigilance is crucial for identifying and managing measles in immunocompromised individuals.
- Future measles epidemics may also see a rise in adult and adolescent cases, requiring updated public health strategies.