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Variants Variants of concern Alpha Beta Gamma Delta Omicron Other variants Epsilon Zeta Eta Theta Iota Kappa Lambda Mu Cluster 5 Lineage B.1.617
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KD-414 is a COVID-19 vaccine candidate developed by Japanese biotechnology company KM Biologics Co.^[1][2][3] Results of a phase 1/2 clinical trial for this vaccine were released as a preprint in June 2022.^[4]