Your browser doesn't support javascript.
loading
Respiratory infections and coinfections: geographical and population patterns / Infecciones y coinfecciones respiratorias: patrón geográfico y de circulación poblacional
Perezbusta-Lara, Norvell; Tirado-Mendoza, Rocío; Ambrosio-Hernández, Javier R.
  • Perezbusta-Lara, Norvell; Universidad Nacional Autónoma de México. Faculty of Medicine. Department of Microbiology y Parasitology. Mexico City. MX
  • Tirado-Mendoza, Rocío; Universidad Nacional Autónoma de México. Faculty of Medicine. Department of Microbiology y Parasitology. Mexico City. MX
  • Ambrosio-Hernández, Javier R; Universidad Nacional Autónoma de México. Faculty of Medicine. Department of Microbiology y Parasitology. Mexico City. MX
Gac. méd. Méx ; 156(4): 263-269, Jul.-Aug. 2020. tab, graf
Article in English | LILACS | ID: biblio-1249909
ABSTRACT
Abstract

Introduction:

Acute respiratory infections are the second cause of mortality in children younger than five years, with 150.7 million episodes per year. Human orthopneumovirus (hOPV) and metapneumovirus (hMPV) are the first and second causes of bronchiolitis; type 2 human orthorubulavirus (hORUV) has been associated with pneumonia in immunocompromised patients.

Objective:

To define hOPV, hMPV and hORUV geographical distribution and circulation patterns.

Method:

An observational, prospective cross-sectional pilot study was carried out. Two-hundred viral strains obtained from pediatric patients were genotyped by endpoint reverse transcription polymerase chain reaction (RT-PCR).

Results:

One-hundred and eighty-six positive samples were typed 84 hOPV, 43 hMPV, two hORUV and 57 co-infection specimens. Geographical distribution was plotted. hMPV, hOPV, and hORUV cumulative incidences were 0.215, 0.42, and 0.01, respectively. Cumulative incidence of hMPV-hORUV and hMPV-hOPV coinfection was 0.015 and 0.23; for hOPV-hMPV-hORUV, 0.035; and for hORUV-hOPV, 0.005. The largest number of positive cases of circulating or co-circulating viruses occurred between January and March.

Conclusions:

This study successfully identified circulation and geographical distribution patterns of the different viruses, as well as of viral co-infections.
RESUMEN
Resumen

Introducción:

Las infecciones respiratorias agudas constituyen la segunda causa de mortalidad en los niños menores de cinco años, con 150.7 millones de episodios anuales. Entre los principales agentes etiológicos están Orthopneumovirus (hOPV) y metapneumovirus (hMPV) humanos como primera y segunda causa de bronquiolitis, respectivamente; Orthorubulavirus humano tipo 2 (hORUV) se ha asociado a neumonía en pacientes inmunocomprometidos.

Objetivo:

Definir patrones de distribución geográfica y de circulación de hOPV, hMPV y hORUV.

Método:

Se llevó a cabo un estudio piloto transversal prospectivo observacional. Se genotipificaron 200 aislamientos virales de pacientes pediátricos mediante transcripción inversa seguida de reacción en cadena de la polimerasa en punto final (RT-PCR).

Resultados:

Se tipificaron 186 muestras positivas 84 de hOPV, 43 de hMPV, dos de hORUV y 57 de coinfecciones. Se trazó la distribución geográfica. Las incidencias acumuladas de hMPV, hOPV y hORUV fueron de 0.215, 0.42 y 0.01, respectivamente. Las incidencias acumuladas de la coinfección de hMPV-hORUV y hMPV-hOPV fueron de 0.015 y 0.23; de hOPV-hMPV-hORUV, de 0.035; y de hORUV-hOPV, de 0.005. El mayor número de casos positivos de virus circulantes o cocirculantes se presentó entre enero y marzo.

Conclusiones:

Fue posible identificar patrones de circulación y distribución geográfica de los diferentes virus, así como de las coinfecciones virales.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Respiratory Tract Infections / Pneumovirus Infections / Paramyxoviridae Infections / Reverse Transcriptase Polymerase Chain Reaction Type of study: Incidence study / Observational study / Prevalence study / Prognostic study / Risk factors Limits: Adolescent / Child / Child, preschool / Humans / Infant / Infant, Newborn Language: English Journal: Gac. méd. Méx Journal subject: Medicine Year: 2020 Type: Article Affiliation country: Mexico Institution/Affiliation country: Universidad Nacional Autónoma de México/MX

Similar

MEDLINE

...
LILACS

LIS


Full text: Available Index: LILACS (Americas) Main subject: Respiratory Tract Infections / Pneumovirus Infections / Paramyxoviridae Infections / Reverse Transcriptase Polymerase Chain Reaction Type of study: Incidence study / Observational study / Prevalence study / Prognostic study / Risk factors Limits: Adolescent / Child / Child, preschool / Humans / Infant / Infant, Newborn Language: English Journal: Gac. méd. Méx Journal subject: Medicine Year: 2020 Type: Article Affiliation country: Mexico Institution/Affiliation country: Universidad Nacional Autónoma de México/MX