"Shark cartilage has no value for human medicine, so it’s a bad thing."

Science’s steady march to find a vaccine capable of ending the coronavirus pandemic may come at the expense of another species: sharks.

Miami shark researchers say they’re concerned about a key ingredient used to make vaccines more effective, squalene — an oily substance found in plants and even human skin — but is particularly concentrated in shark livers.

The practice of using shark-derived squalene as a booster to stimulate a stronger immune response to a vaccine is not unique to the coronavirus vaccine. The compound has been shown to be safe and effective in millions of doses of vaccines, primarily in Europe, said Liza Merly, a shark immunologist at the University of Miami’s Rosenstiel School of Marine and Atmospheric Science.

Read more at the Miami Herald