Table 1.

Participants inclusion and exclusion criteria.

Criteria	Characteristics
Inclusion criteria	Full-term pregnancy
	Absence of infection during gestation period (except SARS-CoV-2 infection in recovered group)
	Absence of infection at the moment of delivery (except SARS-CoV-2 infection in COVID-19 group)
Exclusion criteria	Preterm pregnancy
	Infectious disease during gestation (except SARS-CoV-2 infection in recovered group)
	Infectious disease at the moment of the delivery (except SARS-CoV-2 infection in COVID-19 group)
	Immunocompromised mothers
	Mothers whose babies are in Neonatal Intensive Care Unit
	Caesarea