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Ahmedabad, Jan 12: Union Home Minister Amit Shah on Saturday unveiled over 5.5 lakh postcards written by Ahmedabad residents to Prime Minister Narendra Modi, thanking him for the Citizenship (Amendment) Act.

The postcards were stacked on the dais as Shah addressed a gathering of BJP workers who formed letters `C A A’ in front of him.

The state BJP claimed that the party’s “largest awareness campaign” in support of the CAA had found a place in Limca Book of Records and World Record of India.

“It is not just words but a letter of thanks written from the heart. Our public outreach programme is a reply to the lies being spread against the CAA,” Shah said addressing BJP workers from his former Assembly constituency Naranpura.

The BJP had promised to enact the CAA in its manifesto, he said, asking why the Congress did not oppose it then.

Targeting Rajasthan Chief Minister Ashok Gehlot, Shah said, “Congress has a government in Rajasthan. The Congress party in that state had promised that Hindus and Sikhs from Pakistan would be given citizenship.

“Why do you oppose it when we fulfill the promise made by you?” the Union home minister asked.

“In 2006 and 2009, Ashok Gehlot wrote a letter for the same. We covered Hindus, Sikhs, Parsis, Christians, all of them under the Act, you had only mentioned Hindus and Sikhs,” Shah claimed.

Saying that Prime Minister Narendra Modi, by bringing in the CAA, granted “human rights to lakhs of people”, he asked why opposition was against it.

He challenged “Rahul Baba” (Congress leader Rahul Gandhi), Mamata Banerjee and Arvind Kejriwal to show if any provision of the CAA took away the citizenship of Indian Muslims.

“There is no such provision. Lakhs and crores of people have come to India from Pakistan, Bangladesh to save their religion, their self-respect, to save themselves. Where else will they go?” he asked.

“From the first prime minister of the country Jawaharlal Nehru to the first home minister, first president of the country, and Mahatma Gandhi himself had said that whoever comes to India from Pakistan will be granted citizenship. Hindus, Sikhs, Buddhists and Jains coming from Pakistan have nowhere else to go,” he said.

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.