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. 2022 Apr 8;70:19–27. doi: 10.1016/j.nbt.2022.04.001

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© 2022 The Authors. Published by Elsevier B.V.

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Fig. 3 — Infectivity of SARS-CoV-2 in transport swab systems. Four different transport swab systems were spiked with SARS-CoV-2. Cell culture medium (Medium) infected with the same amount of medium as used for spiking the swab systems, which served as positive control, Viral replication in VeroE6 cells was determined after 72 h by using RT-qPCR.