CureVac N.V. (Nasdaq:CVAC) and its partner GSK (NYSE:GSK) have launched a Phase 1 dose-escalation study to test the performance of CV2CoV, a COVID-19 vaccine candidate based on CureVac’s second-generation mRNA backbone. In late morning trading, CureVac’s stock ticked up 0.10% to $19.22. CVAC shares were trading above $100 before announcing in mid-June 2021 that the…