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[Pertussis: a case study by PCR and culture]
Guillermina Romero-Quechol1, Patricia Tomé-Sandoval, Laura Del Pilar Torres-Arreola
1Unidad de Investigación Epidemiológica y un Servicios de Salud, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico. guillermina.romero@imss.gob.mx
Summary
Pertussis (whooping cough) can occur in unvaccinated children. An epidemiological study of a pertussis case in a child with pneumonia highlighted the importance of vaccination status and family contact tracing for early detection and prevention.
Area of Science:
- Pediatrics
- Infectious Diseases
- Epidemiology
Background:
- Pertussis, commonly known as whooping cough, is a highly contagious respiratory infection.
- Incomplete vaccination is a risk factor for pertussis, especially in young children.
Observation:
- A five-year-old boy with pneumonia presented with incomplete Diphtheria-Tetanus-Pertussis (DPT) vaccination.
- Pertussis was confirmed using Polymerase Chain Reaction (PCR) and culture.
- An epidemiological study involved 20 family contacts, with samples collected twice.
Findings:
- Among family contacts, 35% tested positive for pertussis via PCR.
- Of those positive by PCR, 20% also had positive cultures.
- Incomplete DPT vaccination was noted in the index case.
Implications:
- Pneumonia in children under five warrants assessment of DPT vaccination status.
- Family-based epidemiological studies are crucial for identifying and controlling pertussis outbreaks.
- Early detection and intervention are key to preventing pertussis transmission.
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