In:
International Journal of Microbiology, Hindawi Limited, Vol. 2022 ( 2022-7-5), p. 1-9
Abstract:
Problem. The clinical presentation of coronavirus disease (COVID-19) in children remains controversial. This study analyzed viral excretion in children and adolescents with mild-to-moderate disease and their household contacts, who were treated in Jundiaí, Brazil between March and November 2020, before vaccination was available. Method. This was a prospective, observational, and descriptive cohort study. Nasopharyngeal swabs and blood were collected six times at weekly intervals. Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) tests and immunoglobulin (Ig) G and IgA assays were used to test for COVID-19. Results. Overall, 419 children and 253 adults were enrolled. There was a significant correlation between qRT-PCR confirmation and the 1 to 〈 5 years age group ( p = 0.038 ). Serology changes or recent infections were detected significantly in children 〈 6 months (IgG, p = 0.006 ; IgA, p = 0.001 ) and 〉 5 years of age (IgA, p = 0.040 ; IgG, p = 0.031 ). The mean and median time-to-positivity (using qRT-PCR) was 17 days, with a minimum of 6 and a maximum of 34. Among adults, the mean and median time-to-positivity was 12.6 and 9 days, respectively, with a minimum of 6 and a maximum of 45. Conclusion. Oligosymptomatic conditions may delay diagnosis and facilitate viral transmission. Pediatric-focused research is required, and specific protective measures for children 〈 6 months of age should be considered.
Type of Medium:
Online Resource
ISSN:
1687-9198
,
1687-918X
DOI:
10.1155/2022/5625104
Language:
English
Publisher:
Hindawi Limited
Publication Date:
2022
detail.hit.zdb_id:
2467270-1
Permalink