Afkhami, S., D’Agostino, M. R., Zhang, A., Stacey, H. D., Marzok, A., Kang, A., Singh, R., Bavananthasivam, J., Ye, G., Luo, X., Wang, F., Ang, J. C., Zganiacz, A., Sankar, U., Kazhdan, N., Koenig, J. F. E., Phelps, A., Gameiro, S. F., Tang, S., … Xing, Z. (2022). Respiratory mucosal delivery of next-generation COVID-19 vaccine provides robust protection against both ancestral and variant strains of SARS-CoV-2. Cell, S0092867422001453. https://doi.org/10.1016/j.cell.2022.02.005

Chatterjee, D., Tauzin, A., Marchitto, L., Gong, S. Y., Boutin, M., Bourassa, C., Beaudoin-Bussières, G., Bo, Y., Ding, S., Laumaea, A., Vézina, D., Perreault, J., Gokool, L., Morrisseau, C., Arlotto, P., Fournier, É., Guilbault, A., Delisle, B., Levade, I., … Finzi, A. (2022). SARS-CoV-2 Omicron Spike recognition by plasma from individuals receiving BNT162b2 mRNA vaccination with a 16-weeks interval between doses. Cell Reports, 0(0). https://doi.org/10.1016/j.celrep.2022.110429

Wheatley, A. K., & Juno, J. A. (2021). COVID-19 vaccines in the age of the delta variant. The Lancet Infectious Diseases, 0(0). https://doi.org/10.1016/S1473-3099(21)00688-5

Shapiro, J., Dean, N. E., Madewell, Z. J., Yang, Y., Halloran, M. E., & Longini, I. (2021). Efficacy Estimates for Various COVID-19 Vaccines: What we Know from the Literature and Reports [Preprint]. Epidemiology. https://doi.org/10.1101/2021.05.20.21257461

Eric Topol on Twitter: “New reports on transmissibility and immune evasiveness for delta (B.1.617.2) lead to an update of this Table of the variants and key properties https://t.co/nGzEa39eF4” / Twitter. (n.d.). Retrieved June 5, 2021, from https://twitter.com/EricTopol/status/1400590583274426370

Gaier, Rodrigo Viga. ‘Exclusive: Oxford Study Indicates AstraZeneca Effective against Brazil Variant, Source Says’. Reuters, 5 March 2021. https://www.reuters.com/article/us-health-coronavirus-brazil-variant-exc-idUSKBN2AX1NS.