Objective
Data on the immune response to SARS‐CoV‐2 during pregnancy are lacking and the potential role and effect of SARS‐CoV‐2 vaccination in pregnancy is yet to be completely investigated.
Method
This is a cross‐sectional observational study wherein pregnant women were tested for SARS‐CoV‐2 immunoglobulin M and immunoglobulin G levels, irrespective of their infective status or presence or symptomatology.
Result
Of the 220 pregnant women tested, 160 (72.7%) were SARS‐CoV‐2 IgG positive, 37 (16.8%) were SARS‐CoV‐2 IgM positive and 27 (16.9%) were both IgG and IgM positive. The average antibody titer found was 10.49 BAU/ml (±14.0) and 0.6 (±0.55) for anti‐SARS‐CoV‐2 IgG and IgM non neutralizing antibodies respectively. ROC analysis for SARS‐CoV‐2 IgG positivity showed a cut‐off value of 1.19 with a sensitivity of 99.3% (0.99 AUC, 95% CI) and specificity of 98.3% (0.99 AUC, 95% CI), respectively. Similarly, ROC analysis for SARS‐CoV‐2 IgM positivity showed a cut‐off value of 1 with a sensitivity of 97.3% (0.99 AUC, 95% CI) and specificity of 98.9% (0.99 AUC, 95% CI), respectively.
Conclusion
First trimester sero‐molecular screening suggests a high prevalence of COVID antibodies in the study population of pregnant women in the first trimester, without the patients being symptomatic.