Factors Associated with COVID-19 Infection Related Multisystem Inflammatory Syndrome in Children: A Multicenter...

Area of Science:

• Pediatric Infectious Diseases
• Immunology
• Public Health

Background:

• The COVID-19 pandemic led to an increased incidence of Multisystem Inflammatory Syndrome in Children (MIS-C).
• Factors linking COVID-19 infection to MIS-C in children remain incompletely understood.
• This study addresses the need for clarity on MIS-C development post-COVID-19.

Purpose of the Study:

• To investigate factors associated with MIS-C in children following COVID-19 infection.
• To identify potential protective or risk factors for MIS-C development.
• To inform clinical management and public health strategies for pediatric COVID-19 complications.

Main Methods:

• A multicenter-matched case-control study was conducted in Thailand.
• Included were pediatric patients (under 21) diagnosed with MIS-C (cases) and COVID-19 survivors without MIS-C (controls).
• Conditional logistic regression analyzed associations between factors and MIS-C, with a 1:2 case-to-control ratio matched for age and gender.

Main Results:

• Antiviral therapy during COVID-19 infection was associated with a significantly reduced risk of MIS-C (adjusted odds ratio: 0.06).
• No association was found between COVID-19 vaccination status and MIS-C development.
• Nutritional status did not show a significant link to MIS-C incidence in this cohort.

Conclusions:

• Antiviral treatment during acute COVID-19 infection appears to be a protective factor against MIS-C in children.
• Further research is warranted to explore the mechanisms behind this protective effect.
• Findings suggest a potential therapeutic strategy to mitigate MIS-C risk.