Other companies racing ahead with vaccine trials at various stages include BioNTech ( $BNTX), Pfizer ( $PFE), Dynavax Technologies (NASDAQ: $DVAX), Vaxart (NASDAQ: $VXRT), GlaxoSmithKline (NYSE: $GSK), Heat Biologics (NASDAQ: $HTBX), Inovio Pharmaceuticals ( $INO),