120 children died in Gorakhpur hospital in last 10 days

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."

New Delhi, Jun 19: India on Friday added 13,586 new COVID-19 cases for the first time in a single day, pushing the tally to 3,80,532, while the death toll rose to 12,573 with 336 new fatalities, according to the Union Health Ministry data.

In some positive news, the number of recoveries crossed the two lakh-mark and stands at 2,04,710, while there are 1,63,248 total COVID-19 active cases, according to the updated official figure at 8 am.

One patient had migrated.

"Thus, around 53.79 percent patients have recovered so far," an official said.

The total number of confirmed cases include foreigners. 

India registered over 10,000 cases for the eighth day in a row.

Of the 336 new deaths reported till Friday morning, 100 were in Maharashtra, 65 in Delhi, 49 in Tamil Nadu, 31 in Gujarat, 30 in Uttar Pradesh, 12 each in Karnataka and West Bengal, 10 in Rajasthan, six in Jammu and Kashmir, five in Punjab, four each in Haryana and Madhya Pradesh, three in Telangana, two in Andhra Pradesh and one each in Assam, Jharkhand and Kerala.

New Delhi, May 21: The Airports Authority of India (AAI) issued a standard operating procedure (SOP) to airport operators on Wednesday for recommencement of domestic flights from May 25 onwards, saying Aarogya Setu app is not mandatory for children below 14 years of age.

"Passengers shall compulsorily walk through screening zone for thermal screening at a designated place in the city side before entering the terminal building," the AAI said in its SOP, which has been accessed by news agency.

Airport operators must make appropriate arrangements for sanitisation of a passenger's baggage before his or her entry into the terminal building, said the SOP dated May 20.

The AAI manages more than 100 airports across the country. However, major airports like Delhi, Mumbai, Bengaluru and Hyderabad are managed by private companies. 

Civil Aviation Minister had announced on Wednesday that domestic flight services would resume from May 25 onwards in a calibrated manner.