1. The COVID-19 infection in children and its association with the immune system, prenatal stress, and neurological complications
2. WHO Coronavirus (COVID-19) Dashboard [Internet]. [cited 2022 Jan 14]. Available from: https://covid19.who.int
3. Omicron SARS-CoV-2 variant: a new chapter in the COVID-19 pandemic
4. CDC. Omicron Variant: What You Need to Know [Internet]. Centers for Disease Control and Prevention. 2021 [cited 2022 Jan 7]. Available from: https://www.cdc.gov/coronavirus/2019-ncov/variants/omicron-variant.html
5. Classification of Omicron (B.1.1.529): SARS-CoV-2 Variant of Concern. Available from: https://www.who.int/news/item/26-11-2021-classification-of-omicron-(b.1.1.529)-sars-cov-2-variant-of-concern