 This study found that two different strains of the SARS-CoV-2 virus, B1.617.2 and who, 1, had different effects on the brains of mice. While both viruses caused similar symptoms in other parts of the body, B1.617.2 was more likely to cause damage to the brain, leading to death in some cases. Additionally, the study showed that the B1.617.2 variant activates certain genes related to inflammation and cell death earlier than the who, one variant, suggesting that it may be more dangerous for humans. This article was authored by Juhi Yang, Mayan Sik Yang, Daeminik Kim, and others.