Portadores nasofaríngeos de bacterias potencialmente patógenas en pre-escolares de Maracaibo (2000-2001)

• Main Authors: Castellano-González M, Perozo-Mena A, Ginestre-Pérez M, Ávila-Roo Y
• Format: Article in Journal/Newspaper
• Language: English; Spanish
• Published: Universidad del Zulia,Facultad de Medicina,Departamento de Enfermedades Infecciosas y Tropicales 2002
• Subjects: Nasopharyngeal carriers; pre-school children; a-symptomatic cases; pathogenic bacteria; Portadores; nasofaríngeos; pre-escolares; asintomáticos; bacterias; patógenas; Arctic medicine. Tropical medicine; RC955-962; Public aspects of medicine; RA1-1270; Arctic
• Online Access: https://doaj.org/article/5290efb6d1454e31a7b2b44e80ae6298

Abstract: Frequently, the nasopharynx is colonized by potentially pathogenic bacteria involved in acute lower respiratory tract infections, which constitute one of the main causes of morbidity and mortality among children younger than six years of age, particularly in developing countries. In order to determine the percentage of carriers of these microorganisms, 200 nasal and pharyngeal swabs obtained from children that attended four pre-school institutions in Zulia State during the school year 2000-2001, were processed. Isolation and bacterial identification were made following the conventional methodology. The carrier percentage identified was 73,50%, of which 48,98% presented nasal colonization; 10,20% pharyngeal colonization and 40,82%, carried these bacteria in both nose and pharynx. S. aureus was colonizing the frontal nasal passages in 49,50% of the children studied. Around 12,00% of the pre-school children were found to be nasal carriers of H. influenzae, and 13,50% carried this same pathogen in the pharynx. Oropharyngeal colonization by beta-hemolytic streptococci was detected in 27,00% of the children, distributed in the following manner: 8,00% of group A; 12,50% group B; 1,50% group C; 4,00% group G and 1,00% was ungrouped. For S. pneumoniae, 10,50% of nasal and 3,00% of pharyngeal carriers were identified. Only 1,50% of the children studied carried N. meningitidis. Carriers of B. catarrhalis were not found. The differences obtained in the percentage of carriers according to the age and sex were statistically not significant. Resumen: Frecuentemente, la nasofaringe es colonizada por bacterias potencialmente patógenas involucradas en infecciones agudas del tracto respiratorio inferior, las cuales constituyen una de las principales causas de morbi-mortalidad entre los niños menores de seis años de edad, particularmente en países en desarrollo. Para determinar el porcentaje de portadores de estos microorganismos, se procesaron 200 exudados nasales y faríngeos provenientes de niños que asistían a cuatro ...