Careless-Goat-6184 t1_iss29el wrote on October 18, 2022 at 8:15 AM

Reply to comment by mitcom in Boston University researchers claim to have developed new, more lethal COVID strain in lab - Researchers at Boston University added a spike protein from the Omicron variant with the original Wuhan strain, which has an 80% kill rate (in certain mice) by izumi3682

Omicron being less deadly seems correct based on what is presented in the article. The ancestral virus strain had 100% mortality. Ancestral virus + omicron spike protein had 80% mortality. Omicron strain had mild symptoms.