Analysis of severe human adenovirus infection outbreak in Guangdong Province, southern China in 2019.
Virol Sin
; 37(3): 331-340, 2022 Jun.
Article
en En
| MEDLINE
| ID: mdl-35307598
ABSTRACT
During 2018-2019, a severe human adenovirus (HAdV) infection outbreak occurred in southern China. Here, we screened 18 respiratory pathogens in 1704 children (≤ 14 years old) hospitalized with acute respiratory illness in Guangzhou, China, in 2019. In total, 151 patients had positive HAdV test results; 34.4% (52/151) of them exhibited severe illness. HAdV infection occurred throughout the year, with a peak in summer. The median patient age was 3.0 (interquartile range 1.1-5.0) years. Patients with severe HAdV infection exhibited increases in 12 clinical indexes (P â≤ â0.019) and decreases in four indexes (P â≤ â0.007), compared with patients exhibiting non-severe infection. No significant differences were found in age or sex distribution according to HAdV infection severity (P â> â0.05); however, the distributions of comorbid disease and HAdV co-infection differed according to HAdV infection severity (P â< â0.05). The main epidemic types were HAdV-3 (47.0%, 71/151) and HAdV-7 (46.4%, 70/151). However, the severe illness rate was significantly higher in patients with HAdV-7 (51.4%) than in patients with HAdV-3 (19.7%) and other types of HAdV (20%) (P â< â0.001). Sequencing analysis of genomes/capsid genes of 13 HAdV-7 isolates revealed high similarity to previous Chinese isolates. A representative HAdV-7 isolate exhibited a similar proliferation curve to the curve described for the epidemic HAdV-3 strain Guangzhou01 (accession no. DQ099432) (P â> â0.05); the HAdV-7 isolate exhibited stronger virulence and infectivity, compared with HAdV-3 (P â< â0.001). Overall, comorbid disease, HAdV co-infection, and high virulence and infectivity of HAdV-7 were critical risk factors for severe HAdV infection; these data can facilitate treatment, control, and prevention of HAdV infection.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Infecciones del Sistema Respiratorio
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Infecciones por Adenovirus Humanos
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Adenovirus Humanos
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Coinfección
Límite:
Adolescent
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Child
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Child, preschool
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Humans
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Infant
País/Región como asunto:
Asia
Idioma:
En
Revista:
Virol Sin
Asunto de la revista:
VIROLOGIA
Año:
2022
Tipo del documento:
Article