Sri Lanka captain Dinesh Chandimal will miss next week's first Test against India after being diagnosed with pneumonia, dealing a big blow to the hosts ahead of the three-Test home series against their neighbours.

The 27-year-old was named Test captain earlier this month after long-serving skipper Angelo Mathews stepped down following Sri Lanka's first one-day international series defeat to Zimbabwe.

The right-handed batsman then led Sri Lanka to a win in the one-off Test against the same opposition.

"Chandimal was down with flu and was taken to the hospital this morning," a Sri Lanka Cricket spokesman said.

The first Test against Virat Kohli-led India starts on Wednesday at Galle.

"We were actually only told late last night - the blood test came a bit late. He's got pneumonia," Asanka Gurusinha, Sri Lanka's cricket manager, was quoted as saying by ESPNcricinfo.

"He was admitted to hospital this morning at 9 AM (local time), and he's definitely out of the first Test."

Sri Lanka have limited-overs captain Upul Tharanga in the side while spin spearhead Rangana Herath has also led the side last year in the absence of Mathews.

Source: Khaleej Times