Asian shares retreat after bumpy day on Wall Street

Shares have fallen in Asia after Wall Street ended a choppy day with mixed results as the market struggled to find direction

BANGKOK — Shares fell in Asia on Tuesday on renewed worries that troubles with COVID vaccine rollouts and the spread of new variants of coronavirus might delay a recovery from the pandemic.

Hong Kong led other regional markets lower, dropping 2.4% to 29,440.03.

Traders are keeping a wary eye on rising coronavirus infections in various countries and a bumpy rollout of vaccinations in the U.S. The spread of variants t hat are thought to be more easily transmissible and might be less effectively targeted by existing vaccines is adding to alarm.

Vaccine maker Moderna said Monday that it will study whether a booster shot would be…