He reported receiving patients with Covid who had received little or no exposure to the virus which he suggested pointed to new airborne transmissions.
Dr Chopra said: “You see people without any or sometimes not enough exposure suddenly landing up.
“Which is lending credence to the fact there may be an aerosol or airborne transmission.”
Dr Chopra continued: “It is difficult to believe that but if it is happening it must be true.
“Because normally is it only close contact which has been working since.
He added that while failure to obey social distancing measure may play a part the bigger cause of cases was the new “dry mutant strain.”
The medic told TimesRadio: “People in the last few months have probably let their guard down a little bit and I think one of the reasons could be that.
Fears over the variant, referred to as the B.1.617, have seen India added to the UK travel “red list.”
Having the move comes as border force officials and Europol have flagged the risks posed by travelers using fake documents to circumvent international travel bans.
The use of the counterfeit documents has been flagged as a potential backdoor through which new coronavirus strains could enter the UK undetected.
When pressed by MPs over how border officers were screening for the fake documents, Lucy Morton of the Immigration Services Union (ISU) admitted: “We’re not is the simple answer, it’s predominately taken on trust.”