R15S
R15S, also known as R15S1, is a variant of the SARS-CoV-2 virus, which causes COVID-19. It was first identified in South Africa in April 2021 and has since been detected in several other countries. The variant is named for the mutations it contains, specifically a mutation in the spike protein (R) and a mutation in the N-terminal domain of the spike protein (15S). The 15S mutation is a deletion of 15 amino acids in the N-terminal domain of the spike protein, which is thought to increase the virus's ability to infect cells and evade immune responses.
R15S has been associated with an increased risk of severe disease and death, particularly in older adults
The variant has also been associated with a higher rate of transmission, which has led to concerns
Overall, R15S is a variant of concern that has the potential to significantly impact the global pandemic.