Epidemiological characteristics and outcomes of COVID-19 in asymptomatic versus symptomatic patients.
Asymptomatic infection
COVID-19
Patients with clinical symptoms
Journal
Journal of preventive medicine and hygiene
ISSN: 2421-4248
Titre abrégé: J Prev Med Hyg
Pays: Italy
ID NLM: 9214440
Informations de publication
Date de publication:
Dec 2021
Dec 2021
Historique:
received:
12
07
2021
accepted:
11
09
2021
entrez:
23
5
2022
pubmed:
24
5
2022
medline:
25
5
2022
Statut:
epublish
Résumé
The clinical manifestations of COVID-19 are different, which can be attributed to asymptomatic carriers, acute respiratory disease and pneumonia with different severities. The aim of this study was to compare the epidemiological characteristics and outcomes of COVID-19 in patients with clinical symptoms versus asymptomatic patients. In this retrospective cohort study, the epidemiological characteristics of two groups of patients, with clinical symptoms (n = 38,630) and without clinical symptoms who were definitive cases of COVID-19 (n = 2,327) were investigated in the southwestern of Iran. Chi-square test was used to evaluate the differences between qualitative variables in the two study groups. Of 40,957 patients with COVID-19, 2,327 (5.68%) were asymptomatic, of whom 1391 (59.77%) were males, 1841 patients (79.11%) had a history of contact with definite or suspected cases of COVID-19. Asymptomatic patients were older than symptomatic cases. Patients with clinical symptoms had higher mortality rate than asymptomatic patients (2.68% in symptomatic patients vs 0% in asymptomatic patients). According to the results of our study, the detected viral load in asymptomatic individuals was similar to that of symptomatic patients, indicating that asymptomatic infections can potentially transmit the disease. Therefore, screening and detection of asymptomatic cases is an important and key measure in prevention and early control of COVID-19 worldwide.
Sections du résumé
Background
UNASSIGNED
The clinical manifestations of COVID-19 are different, which can be attributed to asymptomatic carriers, acute respiratory disease and pneumonia with different severities. The aim of this study was to compare the epidemiological characteristics and outcomes of COVID-19 in patients with clinical symptoms versus asymptomatic patients.
Methods
UNASSIGNED
In this retrospective cohort study, the epidemiological characteristics of two groups of patients, with clinical symptoms (n = 38,630) and without clinical symptoms who were definitive cases of COVID-19 (n = 2,327) were investigated in the southwestern of Iran. Chi-square test was used to evaluate the differences between qualitative variables in the two study groups.
Results
UNASSIGNED
Of 40,957 patients with COVID-19, 2,327 (5.68%) were asymptomatic, of whom 1391 (59.77%) were males, 1841 patients (79.11%) had a history of contact with definite or suspected cases of COVID-19. Asymptomatic patients were older than symptomatic cases. Patients with clinical symptoms had higher mortality rate than asymptomatic patients (2.68% in symptomatic patients vs 0% in asymptomatic patients).
Conclusion
UNASSIGNED
According to the results of our study, the detected viral load in asymptomatic individuals was similar to that of symptomatic patients, indicating that asymptomatic infections can potentially transmit the disease. Therefore, screening and detection of asymptomatic cases is an important and key measure in prevention and early control of COVID-19 worldwide.
Identifiants
pubmed: 35603235
doi: 10.15167/2421-4248/jpmh2021.62.4.2254
pmc: PMC9104676
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
E854-E858Informations de copyright
©2021 Pacini Editore SRL, Pisa, Italy.
Déclaration de conflit d'intérêts
Conflict of interest statement The authors declare no conflict of interest.
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