China vaccine-themed ETFs jumped: Penghua and China Merchants vaccine ETFs hit
daily limit; Harvest and Fullgoal vaccine ETFs rose over 9%; Guotai vaccine ETF
climbed more than 7%. Merck (MRK.N) and Moderna (MRNA.O) on Wednesday said their
jointly developed melanoma skin‑cancer vaccine produced positive preliminary
results in the first late‑stage trial.