coronavirus vaccine, India today said the country has two indigenous candidate vaccines which scientists are trying their best to fast-track the development of.Earlier, DCGI gave clearance to two pharma giants Zydus Cadila and Bharat Biotech International Limited (BBIL), who have partnered with ICMR to conduct phase one and two of the clinical trials on humans for Covid -19 vaccine.The Indian Council of Medical Research (ICMR) in a press briefing today said there should not be a delay of a single day for regulatory clearances for these vaccines to break the transmission of the virus in the country as soon as possible."There are two indigenous candidate vaccines and they have gone successful toxicity studies in rats, mice and rabbits.