lastest miracle virus cure Inovio Pharmaceuticals shares rise 12% after its experimental coronavirus vaccine induced immune responses in mice and guinea pigs, according to a new study published today in Nature Communications . Researchers from Inovio and its academic collaborators say the data were promising, but more testing is needed in animals and humans. The company started a study of its vaccine in people in April and expects to release initial results in June. Inovio's animal data come two days after Moderna said its vaccine induced immune responses in its first human trial. (peter.loftus@wsj.com; @Loftus)