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New Delhi, Jul 6: The Indian Academy of Sciences, a Bengaluru-based body of scientists, has said the Indian Council for Medical Research's (ICMR) target to launch a coronavirus vaccine by August 15 is "unfeasible" and "unrealistic".

The IASc said while there is an unquestioned urgent need, vaccine development for use in humans requires scientifically executed clinical trials in a phased manner.

While administrative approvals can be expedited, the "scientific processes of experimentation and data collection have a natural time span that cannot be hastened without compromising standards of scientific rigour", the IASc said in a statement.

In its statement, the IASc referred to the ICMR's letter which states that "it is envisaged to launch the vaccine for public health use latest by 15th August 2020 after completion of all clinical trials".

The ICMR and Bharat Biotech India Limited, a private pharmaceutical company, are jointly developing the vaccine against the novel coronavirus -- SARS-CoV-2.

The IASc welcomes the exciting development of a candidate vaccine and wishes that the vaccine is quickly made available for public use, the statement said.

"However, as a body of scientists including many who are engaged in vaccine development IASc strongly believes that the announced timeline is unfeasible. This timeline has raised unrealistic hope and expectations in the minds of our citizens," it said.

Aiming to launch an indigenous COVID-19 vaccine by August 15, the ICMR had written to select medical institutions and hospitals to fast-track clinical trial approvals for the vaccine candidate, COVAXIN.

Experts have also cautioned against rushing the process for developing a COVID-19 vaccine and stressed that it is not in accordance with the globally accepted norms to fast-track vaccine development for diseases of pandemic potential.

The IASc said trials for a vaccine involve evaluation of safety (Phase 1 trial), efficacy and side effects at different dose levels (Phase 2 trial), and confirmation of safety and efficacy in thousands of healthy people (Phase 3 trial) before its release for public use.

Clinical trials for a candidate vaccine require participation of healthy human volunteers. Therefore, many ethical and regulatory approvals need to be obtained prior to the initiation of the trials, it added.

The IASc said the immune responses usually take several weeks to develop and relevant data should not be collected earlier.

"Moreover, data collected in one phase must be adequately analysed before the next phase can be initiated. If the data of any phase are unacceptable then the clinical trial is required to be immediately aborted," it said.

For example, if the data collected from Phase 1 of the clinical trial show that the vaccine is not adequately safe, then Phase 2 cannot be initiated and the candidate vaccine must be discarded.

For these reasons, the Indian Academy of Sciences believes that the announced timeline is "unreasonable and without precedent", the statement said.

"The Academy strongly believes that any hasty solution that may compromise rigorous scientific processes and standards will likely have long-term adverse impacts of unforeseen magnitude on citizens of India," it said.

New Delhi, Jul 26: Nidan Singh Sachdeva, the Afghan Sikh who was kidnapped a month ago and released recently, arrived here earlier in the day and narrated the ordeals that he faced at the hands of abductors and also thanked the Indian government for bringing him back to his 'motherland'.

Facing threats from Pakistan-backed Taliban, eleven members of Sikh community from Afghanistan, who were granted short-term visas by Indian Embassy in Kabul, including Sachdeva, who was abducted from a gurudwara in Paktia province last month, touched down in New Delhi on Sunday afternoon.

Speaking to news agency on his return, an emotional Sachdeva, said, "I don't know what to call Hindustan -- whether it is my mother or my father -- Hindustan is Hindustan."

"I was abducted from the gurudwara and 20 hours later, I was covered with blood. I was tied to a tree as well. They used to beat me and ask me to convert into a Muslim. I repeatedly told them that why should I convert, I have my own religion," he said while describing
Nidan Singh thanked Government of India for bringing him here.

"I am more than thankful to the Indian government for bringing us here to our motherland. I have no words to describe my feelings here. I arrived here after much struggle. The atmosphere of fear prevails there.

Gurudwara is where we can be safe but a step outside the Gurdwara is fearful," he said.
"They used to beat me every day and every night," he said further and added, "It is because of sheer happiness, I am speechless. I am very grateful to them."

Ministry of External Affairs recently announced that India has decided to facilitate the return of Afghan Hindu and Sikh community members facing security threats in Afghanistan to India.
The decision comes four months after a terror attack at a gurdwara in Kabul's Shor Bazaar killed at least 25 members of the community.

India has condemned the "targeting and persecution" of minority community members by terrorists in Afghanistan at the behest of their external supporters remains a matter of grave concern.

Leaders of the Afghan Sikh community have appealed to the Indian government to accommodate the Sikhs and Hindus from Afghanistan and grant them legal entry with long term residency multiple entry visas.

Once a community of nearly 250,000 people, the Sikh and Hindu community in Afghanistan has endured years of discrimination and violence from extremists, and the community is now estimated to comprise fewer than 100 families across the country.