Table 1 Controls.

From: SARS-CoV-2 can infect the placenta and is not associated with specific placental histopathology: a series of 19 placentas from COVID-19-positive mothers

Control category

Number of placentas examined

Average maternal age in years (range)

Average gestational age in weeks + days (range)

Average placental weight percentile {[32], #136} (range)

For ISH probe specificity

10

31 (24–38)

37 + 5 (31 + 6–40)

~34th (<10→90)

“Normal” controls = only GBS+ as indication for placental examination

122

28 (16–40)

39 + 6 (37–41 + 4)

~34th (<10→90)

“Abnormal” controls = placentas from neonates with clinical diagnosis of HIE

130

31 (16–44)

39 + 4 (33 + 6–43)

~30th (<10→90)

  1. GBS group B Streptococcus, HIE hypoxic ischemic encephalopathy, ISH in situ hybridization.
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