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Measles pneumonia in a newborn
1Servicio de Patología, Hospital de Niños, Sor María Ludovica, La Plata, Argentina.
Abstract:
We report a 21-day-old preterm infant who had severe respiratory distress of 6 days' duration and whose lungs revealed a giant cell pneumonia at necropsy. Measles antigen was demonstrated in mononuclear and multinucleated epithelial cells of the lung by immunoperoxidase staining. We recommend the immunostaining procedure to differentiate measles from other viruses, such as parainfluenza 2 or 3, and respiratory syncytial virus, all of which may produce giant cell pneumonias.
Insights
A preterm infant experienced severe respiratory distress due to giant cell pneumonia. Measles virus was identified as the cause using immunoperoxidase staining, distinguishing it from other viral infections.
Area of Science:
- Pediatric Pathology
- Virology
- Immunohistochemistry
Background:
- Giant cell pneumonia (GCP) is a severe respiratory illness that can affect infants.
- Differential diagnosis of GCP is crucial as multiple viruses can cause this condition.
- Identifying the specific causative agent is essential for appropriate patient management and public health measures.
Observation:
- A 21-day-old preterm infant presented with severe respiratory distress lasting six days.
- Necropsy revealed giant cell pneumonia in the infant's lungs.
- Immunoperoxidase staining detected measles antigen within mononuclear and multinucleated lung cells.
Findings:
- Measles virus was confirmed as the causative agent of giant cell pneumonia in this infant.
- Immunoperoxidase staining proved effective in identifying measles antigen in lung tissue.
- The characteristic giant cells in pneumonia were linked to measles infection.
Implications:
- Immunoperoxidase staining is a valuable diagnostic tool for differentiating measles from other viruses causing GCP, such as parainfluenza or respiratory syncytial virus.
- Early and accurate diagnosis of measles pneumonia in infants can guide clinical treatment and infection control strategies.
- This case highlights the importance of considering measles in the differential diagnosis of severe pneumonia in neonates, particularly in unvaccinated or incompletely vaccinated populations.