“Delta plus is having greater affinity to mucosal lining in the lungs, higher compared to other variants, but if it causes damage or not is not clear yet. It also does not mean that this variant will cause more severe disease or it is more transmissible,” Arora said.

He said the impact of the Delta plus strain will become clear only as more cases are identified but it appears that the disease is generally mild in all those who have got either single or double dose of the vaccine.