Persistence of IgM SARS-COV-2 in patients who completed quarantine for COVID-19, in Arequipa, Peru
Objective: To analyze clinical characteristics of convalescent patients for COVID-19 who show persistence of IgM. Materials and methods: Analytical study; 614 patients were evaluated from day 21 to 175 after onset of symptoms. There were 19 cases with positive IgM (3.1%). A control group was used t...
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| Autores principales: | , , |
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Escuela de Salud Pública y Ambiente. Fac. Cs. Médicas UNC
2023
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| Materias: | |
| Acceso en línea: | https://revistas.unc.edu.ar/index.php/RSD/article/view/32051 |
| Aporte de: |
| Sumario: | Objective: To analyze clinical characteristics of convalescent patients for COVID-19 who show persistence of IgM.
Materials and methods: Analytical study; 614 patients were evaluated from day 21 to 175 after onset of symptoms. There were 19 cases with positive IgM (3.1%). A control group was used to compare clinical variables, grouping them into categories and applying chi-squared test or Fisher's exact test (p <0.05).
Results: Cases of positive IgM were recorded from the end of quarantine (day 21), reaching the highest number during the 44-65-day interval (42.1%). An association was found between the presence of positive IgM and autoimmune diseases (p = 0.02).
Conclusions: There is persistence of SARS-CoV-2 IgM positivity up to 175 days after the onset of symptoms, mainly associated with cross-reactivity with autoimmune diseases. This provides useful information to clarify causes and help in medical management.
Keywords: coronavirus infections; serology; immunoglobulin M, false positive reactions; autoimmune diseases. |
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