New Delhi, Feb. 11 -- India's T20 World Cup preparations have been disrupted after opener Abhishek Sharma was admitted to a private hospital in New Delhi with a stomach infection, leaving his availability in doubt for Thursday's group-stage match against Namibia.

The left-handed batter, one of India's key top-order options, has been unwell since before the previous fixture against the United States, according to a report by The Times of India. His condition is said to have worsened after that match, during which he was dismissed for a golden duck and did not take the field while India bowled.

Abhishek was reportedly running a high temperature and was administered drips for immediate relief. He also missed India's training session at the...