Table 1.

Frequency distribution of articles according to the topic and objectives of the study

Row	Purpose	Abundance	Percentage
1	The relationship between the transmission of COVID-19 through vaginal secretions	23	19.16
2	Correlation between transmission of COVID-19 through ejaculate	19	15.83
3	The relationship between vertical transmission of COVID-19 around and around childbirth through the birth canal	57	47.5
4	Transmission of COVID-19 through genital secretions and umbilical cord blood	0	0/0
5	Transmission of COVID-19 through vaginal secretions to the baby’s blood	1	0.83
6	Transmission of COVID-19 through breast milk	20	16.66
7	Total	120 articles	100/0
Type of study
The reviewed articles have been published between 2019 and 2023
10 prospective studies	5 observational studies
7 retrospective studies	26 review studies
3 systematic review studies and meta-analysis	9 experimental studies
2 clinical trials	18 case report studies and 4 case series
2 case–control studies	12 cross-sectional studies
3 case reports and reviews	7 cohort studies
1 narrative review	15 systematic review studies
Quality of studies
11 studies had excellent quality	109 studies had average quality	Studies that had poor quality are deleted