New Delhi:The Central government on Tuesday reiterated that the Covid19 vaccines in India will work against the new SARS-CoV-2 variant that has been detected in the UK.
Outlining concerns about the new Covid-19 variants detected in the UK and South Africa, principal scientific adviser to the Government of India Dr Vijay Raghavan said, "There is no evidence that current vaccines will fail to protect against Covid-19 variants reported from the UK or South Africa."
He said that most vaccines target spike protein, in which there are changes in the variants. But vaccine stimulates our immune system to produce a wide range of protective antibodies, he added. "The changes in the variants are not sufficient to make the vaccines ineffective," said Dr Raghavan.
Giving details of the new variants, Dr Raghavan said that 8 of the 17 important changes are in the part which codes for the spike protein. "One change, N501Y increase affinity for the ACE2 receptor, used for vital entry into human cells. N501Y has been linked earlier to increased infectivity and transmission in animal models," said Dr Raghavan while addressing a press conference in New Delhi.
South Africa states the N501Y mutation with the UK variants, in addition to other distinct changes. In fact, the UK has witnessed a sudden spike in positivity rate ever since the new variant has been detected. "The UK variant is more transmissible," said Dr Raghavan.
Asserting that the new variants is a matter of concern and people need to take extraordinary precautions, Dr Raghavan said that Covid19 vaccines in India will come out soon. "At the same time, we are doing testing and sequencing of samples from international travellers from across the country. We are also testing and sequencing of samples from those being admitted to hospitals," Dr Raghavan said.
Dr Balram Bhargava, director-general of Indian Council of Medical Research (ICMR) said that well-established therapy for Covid19 treatment should be used. "Because of immune pressure on the virus, the mutation occurs. So we need to use well-established therapy for Covid19 treatment. At the same time we need to monitor immunity breakthrough that occurs following vaccination," said Dr Bhargava.