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Italian researchers have claimed that they have successfully developed a vaccine to contain coronavirus (COVID-19) which is likely to work on humans, a report said.

Luigi Aurisicchio, CEO of Takis, the firm developing the medication, said that a coronavirus candidate vaccine has neutralised the virus in human cells for the first time, the Arab News reported.

"This is the most advanced stage of testing of a candidate vaccine created in Italy. Human tests are expected after this summer," Aurisicchio was quoted as saying to Italian news agency ANSA.

"According to the Spallanzani Hospital, as far as we know we are the first in the world so far to have demonstrated neutralisation of the coronavirus by a vaccine. We expect this to happen in humans too," he added.

The researchers experimented with the vaccine on mice that had successfully developed antibodies that blocked the virus from infecting the cells. They further observed that the five vaccine candidates generated a large number of antibodies, and selected two with the best results.

All of the vaccine candidates currently being developed are based on the genetic material of DNA protein "spike", the molecular tip used by the coronavirus to enter human cells.

They are injected with the so-called "electroporation" technique, which consists of an intramuscular injection followed by a brief electrical impulse, helping the vaccine break into the cells and activating the immune system, the report said.

Researchers believe that this makes their vaccine particularly effective for generating functional antibodies against the "spike" protein, in particular in the lung cells, which are the most vulnerable to coronavirus.

"We are working hard for a vaccine coming from Italian research, with an all-Italian and innovative technology, tested in Italy and made available to everyone," Aurisicchio was quoted by the Arab News report.

"In order to reach this goal, we need the support of national and international institutions and partners who may help us speed up the process," he noted.

The total number of COVID-19 infections, fatalities and recoveries since the pandemic began has risen to 213,013 in the country.

Washington, Mar 18: Hundreds of distressed Indian students, stuck in the Philippines, are seeking help through video messages as they are unable to fly back home due to the travel restrictions imposed by India to contain the spread of the deadly novel coronavirus, according to friends and relatives of some of these students in the US.

The Indian government on Tuesday banned the entry of passengers from Afghanistan, Philippines and Malaysia to India with immediate effect amid stepped up efforts against the spread of COVID-19.

In a video message by one of these students Akhil Bala Nair, around 200 Indian students had booked their flight tickets for India in the next few days. But all of them have been cancelled due to the new policy.

Most of the students, she said, had booked their flights for March 17 and rest were schedule to travel to India on March 19 and 20. But the flights were cancelled and scores of Indian students are now stuck at the airport in Manila, Nair said in the video message sent to Prem Bhandari, head of the Jaipur Foot USA.

“It is need of the hour that the Indian government send a plane to bring these Indian students back home,” Bhandari, who in the past has worked for the cause of the Indian diaspora, and who was approached by these students told PTI.

According to these students, some 100 of them have been at the airport since Tuesday.

They all have confirmed tickets but the airport authorities are not allowing them to check in because of the new travel regulations.

While the airport authorities have asked them to go back to their respective place of residence, the students said they were unable to travel because of the absence of local taxi or shared ride services.

The students said that they are running out of time as the Philippines government has given them 72 hours time to exit the country, which started from March 16, after which the country will go into lockdown.

“This means we would not be able to travel anywhere outside Philippines after March 20,” Nair said in her message.

The students said that there are many of them who have applied for renewal of their visas and are unable to travel to India.

There are nearly 1,000 Indian students presently in Manila who are willing to travel back home, they said.

Meanwhile, the Indian Embassy in Manila, in a tweet, said that they, along with the Ministry of External Affairs, are trying to work out a solution.

“It is requested to all to kindly have patience,” the embassy said.

Melbourne, Apr 10: Scientists have identified six drug candidates from more than 10,000 compounds that may help treat COVID-19.

The research, published in the journal Nature, tested the efficacy of approved drugs, drug candidates in clinical trials and other compounds.

"Currently there are no targeted therapeutics or effective treatment options for COVID-19," said Professor Luke Guddat from the University of Queensland in Australia.

"In order to rapidly discover lead compounds for clinical use, we initiated a programme of high-throughput drug screening, both in laboratories and also using the latest computer software to predict how different drugs bind to the virus," Guddat said.

The project targeted the main COVID-19 virus enzyme, known as the main protease or Mpro, which plays a pivotal role in mediating viral replication, the researchers said.

This makes it an attractive drug target for this virus, and as people don't naturally have this enzyme, compounds that target it are likely to have low toxicity, they said.

"We add the drugs directly to the enzyme or to cell cultures growing the virus and assess how much of each compound is required to stop the enzyme from working or to kill the virus. If the amount is small, then we have a promising compound for further studies," said Guddat.

After assaying thousands of drugs, researchers found of the six that appear to be effective in inhibiting the enzyme, one is of particular interest.

"We're particularly looking at several leads that have been subjected to clinical trials including for the prevention and treatment of various disorders such as cardiovascular diseases, arthritis, stroke, atherosclerosis and cancer," Guddat said.

Researchers said compounds that are already along the pipeline to drug discovery are preferred, as they can be further tested as antivirals at an accelerated rate compared to new drug leads that would have to go through this process from scratch.

"With continued and up-scaled efforts we are optimistic that new candidates can enter the COVID-19 drug discovery pipeline in the near future," Guddat said.