Shark Allies Are Worried That ~500,000 Sharks Could Be Killed For Their Liver Extracted Squalene, For Use In COVID-19 Vaccine. Squalene Is A Common Ingredient Used In Cosmetics, Malaria And Flu Vaccines. Olive Oil And Sugar Cane, E.G., Are Sustainable Squalene Alternatives, But Shark Is Preferred Because It Cost Less And Yields More.
A Coronavirus Vaccine Could Kill Half A Million Sharks, Conservationists Warn : Coronavirus Live Updates : NPRThe use of an immune-system stimulant harvested from shark liver oil in the development of some coronavirus vaccines has animal conservationists pressing for alternatives.