Mealey's (August 27, 2020, 1:55 PM EDT) -- SAN FRANCISCO — An oral vaccine developer and others engaged in a massive pump-and-dump scheme in violation of federal securities laws stemming from the defendants' alleged misrepresentations that the company's COVID-19 oral vaccine candidate had been chosen to take part in the U.S. government's Operation Warp Speed (OWS) program, an investor argues in an Aug. 24 securities class action filed in California federal court (Kirk Himmelberg v. Vaxart Inc., et al., No. 20-5949, N.D. Calif.)....