Free, H., Luckhaupt, S. E., Billock, R. M., Groenewold, M. R., Burrer, S., Sweeney, M. H., Wong, J., Gibb, K., Rodriguez, A., Vergara, X. P., Cummings, K. J., Lavender, A., Argueta, G., Crawford, H. L., Erukunuakpor, K., Karlsson, N. D., Armenti, K., Thomas, H., Gaetz, K., Dang, G., Harduar-Morano, L., & Modji, K. (n.d.). reported Exposures Among In-Person Workers With Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Infection in 6 States, September 2020–June 2021 . Clinical infectious diseases, 75, S216–S224. http://access.bl.uk/ark:/81055/vdc_100167547598.0x000036