[Vaccine-themed ETFs Surge] Odaily Planet Daily News: Market data shows that vaccine-themed ETFs have surged. The Vaccine ETF Penghua and Vaccine ETF CMB have both hit their daily limit, while Vaccine ETF Harvest and Vaccine ETF Fullgoal have both risen by over 9%, and Vaccine ETF Guotai has increased by over 7%. On the news front, Merck (MRK.N) and Moderna (MRNA.O) announced on Wednesday that their jointly developed melanoma skin cancer vaccine has achieved positive preliminary results in its first advanced clinical trial.