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Thiruvananthapuram, Jun 5: One man has been arrested in connection with the death of a pregnant elephant in Palakkad district here, Kerala Forest Minister K Raju said on Friday.

"One accused identified as Wilson has been arrested in connection with the case. More people are involved. The process to arrest all the accused is underway. Strict action will be taken in the matter to ensure such incidents are not repeated in the future," Raju told reporters here.

The elephant had died in Palakkad district on May 27 after it ate a pineapple stuffed with crackers and forest officials said that it died standing in river Velliyar after it suffered an injury in its lower jaw.

Raju said that the forest department has appointed three teams to probe the matter, and added that police are also investigating the incident as explosives were used.

"There may be some type of crackers inside the fruit. In such cases, blast occurs and the animal can not even drink water. The primary post mortem reports said that this case is like that. Let it be investigated," he said.

"Man and animal conflict is natural in our state as people residing close to the forests. The government gives compensation for farmers, Rs 10 lakhs compensation if a person dies in an animal attack," the Minister added.

The death of the pregnant elephant has sparked a controversy, with Kerala Chief Minister Pinarayi Vijayan terming the unfortunate death as "a painful thing" and Union Environment Minister Prakash Javadekar saying that the Centre has taken a "serious note" of the incident.

According to the preliminary post-mortem report, the immediate cause of the death of the female elephant was drowning followed by inhalation of water leading to lung failure.

The elephant was seen standing in the river with its mouth and trunk in the water for some relief from the pain after the explosive-filled fruit exploded in its mouth.

London/Milan, Jun 2: World Health Organization experts and a range of other scientists said on Monday there was no evidence to support an assertion by a high profile Italian doctor that the coronavirus causing the COVID-19 pandemic has been losing potency.

Professor Alberto Zangrillo, head of intensive care at Italy's San Raffaele Hospital in Lombardy, which bore the brunt of Italy's COVID-19 epidemic, on Sunday told state television that the new coronavirus "clinically no longer exists".

But WHO epidemiologist Maria Van Kerkhove, as well as several other experts on viruses and infectious diseases, said Zangrillo's comments were not supported by scientific evidence.

There is no data to show the new coronavirus is changing significantly, either in its form of transmission or in the severity of the disease it causes, they said.

"In terms of transmissibility, that has not changed, in terms of severity, that has not changed," Van Kerkhove told reporters.

It is not unusual for viruses to mutate and adapt as they spread, and the debate on Monday highlights how scientists are monitoring and tracking the new virus. The COVID-19 pandemic has so far killed more than 370,000 people and infected more than 6 million.

Martin Hibberd, a professor of emerging infectious disease at the London School of Hygiene & Tropical Medicine, said major studies looking at genetic changes in the SARS-CoV-2 virus that causes COVID-19 did not support the idea that it was becoming less potent, or weakening in any way.

"With data from more than 35,000 whole virus genomes, there is currently no evidence that there is any significant difference relating to severity," he said in an emailed comment.

Zangrillo, well known in Italy as the personal doctor of former Prime Minister Silvio Berlusconi, said his comments were backed up by a study conducted by a fellow scientist, Massimo Clementi, which Zangrillo said would be published next week.

Zangrillo told Reuters: "We have never said that the virus has changed, we said that the interaction between the virus and the host has definitely changed."

He said this could be due either to different characteristics of the virus, which he said they had not yet identified, or different characteristics in those infected.

The study by Clementi, who is director of the microbiology and virology laboratory of San Raffaele, compared virus samples from COVID-19 patients at the Milan-based hospital in March with samples from patients with the disease in May.

"The result was unambiguous: an extremely significant difference between the viral load of patients admitted in March compared to" those admitted last month, Zangrillo said.

Oscar MacLean, an expert at the University of Glasgow's Centre for Virus Research, said suggestions that the virus was weakening were "not supported by anything in the scientific literature and also seem fairly implausible on genetic grounds."