There is an urgent need for inexpensive, population-wide surveillance testing for COVID-19. We tested newborn dried blood spot (DBS) anti-SARS-CoV-2 antibodies for all infants born at Yale from March to May 2020, and found that newborn DBS serologies reflect maternal and population-wide infection rates during the study period. This suggests a role for DBS in COVID-19 surveillance in areas where viral testing is limited.


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Liu, F., Nguyen, M., Vijayakumar, P., Kaplan, A., Meir, A., Dai, Y., Wang, E., Walsh, H., Ring, A., Omer, S. & Farhadian, S. 2020, 'Newborn dried blood spots for serologic surveys of COVID-19', Paediatric Infectious Disease Journal, 39(12), pp. e454-e456. https://doi.org/10.1097/INF.0000000000002918

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Last updated: 16 February 2023
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