COVID-19 Disease Severity Risk Factors for Pediatric Patients in Italy

Pediatrics. 2020 Oct;146(4):e2020009399. doi: 10.1542/peds.2020-009399. Epub 2020 Jul 14.


Objectives: To describe the epidemiological and clinical characteristics of coronavirus disease (COVID-19) pediatric patients aged <18 years in Italy.

Methods: Data from the national case-based surveillance system of confirmed COVID-19 infections until May 8, 2020, were analyzed. Demographic and clinical characteristics of subjects were summarized by age groups (0-1, 2-6, 7-12, 13-18 years), and risk factors for disease severity were evaluated by using a multilevel (clustered by region) multivariable logistic regression model. Furthermore, a comparison among children, adults, and elderly was performed.

Results: Pediatric patients (3836) accounted for 1.8% of total infections (216 305); the median age was 11 years, 51.4% were male, 13.3% were hospitalized, and 5.4% presented underlying medical conditions. The disease was mild in 32.4% of cases and severe in 4.3%, particularly in children ≤6 years old (10.8%); among 511 hospitalized patients, 3.5% were admitted in ICU, and 4 deaths occurred. Lower risk of disease severity was associated with increasing age and calendar time, whereas a higher risk was associated with preexisting underlying medical conditions (odds ratio = 2.80, 95% confidence interval = 1.74-4.48). Hospitalization rate, admission in ICU, disease severity, and days from symptoms onset to recovery significantly increased with age among children, adults and elderly.

Conclusions: Data suggest that pediatric cases of COVID-19 are less severe than adults; however, age ≤1 year and the presence of underlying conditions represent severity risk factors. A better understanding of the infection in children may give important insights into disease pathogenesis, health care practices, and public health policies.

MeSH terms

  • Adolescent
  • Age Factors
  • Betacoronavirus
  • COVID-19
  • Child
  • Child, Preschool
  • Comorbidity
  • Coronavirus Infections / diagnosis
  • Coronavirus Infections / epidemiology*
  • Coronavirus Infections / mortality
  • Coronavirus Infections / therapy
  • Critical Care
  • Female
  • Humans
  • Infant
  • Infant, Newborn
  • Italy / epidemiology
  • Logistic Models
  • Male
  • Pandemics*
  • Pneumonia, Viral / diagnosis
  • Pneumonia, Viral / epidemiology*
  • Pneumonia, Viral / mortality
  • Pneumonia, Viral / therapy
  • Population Surveillance
  • Risk Factors
  • SARS-CoV-2
  • Severity of Illness Index*