Inovio says COVID-19 vaccine produces antibodies in mice, guinea pigs

U.S. immunotherapy company Inovio Pharmaceuticals Inc on Wednesday said its experimental vaccine to prevent coronavirus infection was shown to produce protective antibodies and immune system responses in mice and guinea pigs. The company's shares, which have more than quadrupled this year, surged 17.

7% to $17.13 in trading before the bell. "We saw antibody responses that do many of the things we would want to see in an eventual vaccine," said Dr. David Weiner, director of the vaccine and immunotherapy center at the Wistar.

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