tested (%)
0C3360/361/34 (2.9)8/34 (23.5)4C7110/100/81/88C14061/60/60/615C21040/40/32/3Total571/56 (1.8)1/51 (1.9)11/51 (21.6)RNA bad at delivery (settings)0Not tested0/3920/39 (51.3) Bay 41-4109 less active enantiomer Open in a separate window aIn addition, 2 neonates created to mothers with COVID-19 60?days before delivery were positive in IgG ELISA and PRNT IgG-anti-SARS-CoV-2 positivity among neonates born to SARS-CoV-2 RNA positive mothers was 21.6% (11/51, Table ?Table2)2) suggestive of lack/lower levels of antibodies in majority of these mothers. as evidenced by viral RNA in the neonatal nose swab/cord blood (CB) was 3.6%. IgG-anti-SARS-CoV-2 positivity was 21.6%. Of the 39 neonates created to SARS-CoV-2-RNA-negative mothers, 20 (51%) and none, respectively, were positive for IgG-anti-SARS-CoV-2 and viral RNA. Preterm deliveries were higher in SARS-CoV-2-RNA+?(18.6%) than SARS-CoV-2 RNA-negative (0/39) mothers (lower section cesarean section Of the 59 neonates born to SARS-CoV-2-RNA positive mothers, 11 (18.6%) were preterm while all the SARS-CoV-2 RNA negative ladies delivered full term (p?0.005) (Table ?(Table1,1, Fig.?1). Preterm deliveries among symptomatic mothers (6/10, 60%) were significantly higher than those with asymptomatic illness (5/47, 10.6%, p?0.001). The mother requiring hospitalization in an ICU delivered full term. No variations in the proportion of preterm deliveries were found when primigravida (5/27, 18.5%) and multigravida mothers (4/25, 16%) were compared (p?>?0.1). For 5 mothers, the gravida data were not available. Twelve neonates required respiratory support; meconium aspiration (n?=?3), transient tachypnea (8) and pneumonia (1). Continuous respiratory support was required for one neonate with Schwartz Jampel syndrome and not for COVID-19. Importantly, respiratory stress at delivery that lasted for?4?h, was higher among neonates born to mothers with SARS-CoV-2 RNA (20/59, 33.9%) than the control mothers (3/39, 7.7%; p?0.001) (Table ?(Table1;1; Fig.?1). Open in a separate windowpane Fig. 1 Summary of clinical characteristics and laboratory investigations for neonates created to SARS-CoV-2 positive (a) and bad (b) mothers SARS-CoV-2 RNA and IgG/neutralizing anti-SARS-CoV-2 antibodies in the neonates Majority of the pregnant women (36/57, 63.1%) were screened for viral RNA within 3?days of delivery while 47/57 (82.4%) were within 7?days of childbirth (Table ?(Table2).2). SARS-CoV-2 RNA was recognized in 1/56 (1.8%) NPS and 1/51 (1.9%) CB specimens from the neonates born to SARS-CoV-2 RNA positive mothers. These neonates were created 9?days and 2?days, respectively after Bay 41-4109 less active enantiomer the mothers COVID-19 analysis. Both the neonates showing viral RNA positivity were created to symptomatic mothers. Overall, the risk of perinatal transmission was 3.6% (2/56). All the 39 CB samples collected from your control mothers were viral RNA bad (Fig.?1.). Table 2 Relationship of duration between COVID-19 analysis and delivery with the detection of SARS-CoV-2 RNA and IgG-anti-SARS-CoV-2 antibodies in the wire blood samples
0C3360/361/34 (2.9)8/34 (23.5)4C7110/100/81/88C14061/60/60/615C21040/40/32/3Total571/56 (1.8)1/51 (1.9)11/51 (21.6)RNA bad at delivery (settings)0Not tested0/3920/39 (51.3) Open in a separate windowpane aIn addition, 2 neonates born to mothers with COVID-19 60?days before delivery were positive in IgG ELISA and PRNT IgG-anti-SARS-CoV-2 positivity among neonates born to SARS-CoV-2 RNA positive mothers was 21.6% (11/51, Table ?Table2)2) suggestive of lack/lower levels of antibodies in majority of these mothers. Of the 9 IgG positives subjected to PRNT, 2 with OD ideals?0.8 were negative, while the remaining were positive, with mean Bay 41-4109 less active enantiomer PRNT50 titer being 42.4??24. Both the neonates created to mothers IL25 antibody with COVID-19 disease 60?days prior to delivery were positive for both IgG and neutralizing antibodies (Furniture ?(Furniture2,2, ?,3).3). Remarkably, very high proportion of neonates created to the control mothers were positive for IgG-anti-SARS-CoV-2 antibodies (20/39, 51.3%, p?0.005) revealing prevalent asymptomatic illness. Since the 1st case of COVID-19 in Pune, India was recognized on 29th March 2020, all these ladies were infected during pregnancy. Of the 20 ELISA positives, 15 showed presence of neutralizing antibodies (Nabs) with imply PRNT50 titer 72.3??46.7. Five samples showing low OD ideals in Bay 41-4109 less active enantiomer ELISA (4?0.7 and one 1.53) were negative for neutralizing antibodies (PRNT50?10). One sample with OD of 1 1.1 did display Nabs at a titer of 19. Table 3 SARS-CoV-2 RNA and antibodies in the mother-infant pairs examined
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Duration between COVID-19 analysis and delivery (No. of days)
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