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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.

Muzaffarpur, May 27: A toddler's vain attempt to wake up his dead mother from eternal sleep on a railway platform in Bihar's Muzaffarpur on Wednesday presented the most poignant picture of the massive migrant tragedy unfolding across several states.

A video tweeted by Sanjay Yadav, an aide to RJD leader Tejashwi Yadav, shows the child walking unsteadily up to his mother's body, tugging at the blanket placed over her, and when failing to wake her up, covering his own head with it.

छोटे बच्चे को नहीं मालूम कि जिस चादर के साथ वह खेल रहा है वह हमेशा के लिए मौत की गहरी नींद सो चुकी माँ का कफ़न है। 4 दिन ट्रेन में भूखे-प्यासे रहने के कारण इस माँ की मौत हो गयी। ट्रेनों में हुई इन मौतों का ज़िम्मेवार कौन? विपक्ष से कड़े सवाल पूछे जाने चाहिए कि नहीं?? pic.twitter.com/pdiaHuS9vf

— Sanjay Yadav (@sanjuydv) May 27, 2020

As the mother still lay still, he wobbles away from her, announcements continuing in the background about the arrival and departure of trains that would bring in tens of thousands of people in a rush to get away from hunger and hardship they face in large cities that could sustain them no more.

"This small child doesn't know that the bedsheet with which he is playing is the shroud of his mother who has gone into eternal sleep. This mother died of hunger and thirst after being on a train for four days. Who is responsible for these deaths on trains? Shouldn't the opposition ask uncomfortable questions?" tweeted Yadav.

However, police had a different story to tell.

Ramakant Upadhyay, the Dy SP of the Government Railway Police in Muzaffarpur, said the incident occurred on May 25 when the migrant woman was on way to Muzaffarpur from Ahmedabad by a Shramik Special train.

He told reporters the woman, who was accompanied by her sister and brother-in-law, had died on the Madhubani bound train.

"My sister-in-law died suddenly on the train. We did not face any problem getting food or water," the officer said, quoting the deceased's brother-in-law who he did not name.

He said on getting information, poice brought down the body and sent it for postmortem.

Citing the brother-in-law of the deceased, Upadhyay said she was aged 35 years and was undergoing treatment for "some disease" for the last one year in Ahmedabad. "She was also mentally unstable," he said.

When persistently queried about the cause of death, he said,"Only doctors can tell".

A massive exodus of migrant workers is on in several parts of the country, unprecedented in magnitude since Partition.

The humanitarian crisis still unfolding on highways and railway platforms has shone light on disturbing tales of entire families walking hundreds of kilometres with little children on foot in a seemingly endless march to escape hunger.

People have been found travelling on trucks and in the hollow of concrete mixing plants, and in many cases, dying from hunger and exhaustion before reaching their destinations.

New Delhi, May 7: Air India has opened bookings for eligible foreign nationals and valid visa holders of the UK, the USA and Singapore for outbound repatriation flights that will be operated between May 7 and May 14 under the Vande Bharat mission, officials said.

Foreign nationals or valid visa holders will be charged the same fare as Indian nationals who want a seat on the inbound repatriation flights, they said.

For all flights between India and the USA under the Vande Bharat mission, Air India is charging a fixed fare of Rs 1 lakh per passenger.

For flights between India and Singapore, the charge is Rs 18,000-20,000 per passenger, and it is Rs 50,000 per person for India-UK flights.

On Tuesday, the Ministry of Home Affairs had clarified that a person who has an Overseas Indian Citizenship (OCI) card, or citizenship of a foreign country, or a valid visa of more than one year of that country, or the green card of that country can travel on repatriation flights leaving India under the Vande Bharat mission.

Air India will be conducting 64 flights to 12 countries between May 7 and May 13 to bring back approximately 15,000 Indians stranded due to the coronavirus-induced lockdown, Civil Aviation Minister Hardeep Singh Puri had announced on Tuesday.

However, some flights have been delayed and therefore, this set of 64 flights will be operated between May 7 and May 14, the airline officials said.

On Wednesday, an Indian businessman and his cook landed at Delhi airport from Lusaka in Zambia in a plane that was supposed to come without any passengers, senior government officials said.

The private chartered aircraft was scheduled to come empty and take around 40 Zambian nationals to Lusaka in a repatriation flight, they added.

"We had not permitted any incoming passengers. We will seek explanation from the airline (private operator) as to how it happened. BOI (Bureau of Immigration) has a very stringent protocol for dealing with such deviations, which must have been acted upon," said a senior official of aviation regulator DGCA.

It is not clear if the businessman and his cook were deported or sent to a quarantine facility within India.

India has been under a lockdown since March 25 to curb the spread of the novel coronavirus. All scheduled commercial passenger flights have been suspended during the lockdown.

However, cargo flights, medical evacuation flights and special flights permitted by Directorate General of Civil Aviation (DGCA) have been allowed to operate during this time.