1. Cucinotta, D, Vanelli, M. WHO declares COVID-19 a pandemic. Acta Biomed 2020;91:157–60. https://doi.org/10.23750/abm.v91i1.9397.
2. COVID data tracker. Available from: https://covid.cdc.gov/covid-data-tracker/#global-counts-rates [Accessed 24 Jul 2022].
3. Data on COVID-19 during pregnancy: severity of maternal illness. Available from: https://covid.cdc.gov/covid-data-tracker/#pregnant-population [Accessed 24 Jul 2022].
4. Pregnant women with COVID-19, United States, January 22, 2020 - July 18, 2022. Available from: https://covid.cdc.gov/covid-data-tracker/#pregnant-population [Accessed 23 Jul 2022].
5. Pregnancy data. Available from: https://covid.cdc.gov/covid-data-tracker/#pregnancy-data [Accessed 24 Jul 2022].