If used with caution, SARS-CoV-2 serological assays can guide reintroduction of workforce

With several high-quality serological assays for SARS-CoV-2 now available, the key challenge in using them to help people return to ‘normal life,’ write Florian Krammer and Viviana Simon in this Perspective, will be to apply them in a strategic manner — one that considers their unique sensitivity and specificity levels, acknowledges the questions they don’t yet answer, and more.