New Covid strain causing worry all around world, Delhi HC told By IANS | Published on Thu, Dec 24 2020 19:42 IST | 0 Views West Nile Virus.. Image Source: IANS News New Delhi, Dec 24 : The Delhi High Court was on Thursday informed by the city government that the new strain of Covid is "causing worry all around the world" and it remains to be seen what effect it could have. Additional Solicitor General Sanjay Jain, representing the Delhi government, told a single judge bench of Justice Navin Chawla that "this mutated strain of the virus is causing a worry all over the world. People within mutated strain have already come to India. There is new strain from South Africa".