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New Delhi, Fevb 10: Of the countries most at risk of importing coronavirus cases, India ranks 17th, researchers have found on the basis of a mathematical model for the expected global spread of the virus that originated in China's Wuhan area in December 2019.

So far, India has reported three coronavirus positive cases -- all from Kerala.

Among the airports in India, the Indira Gandhi International Airport in New Delhi is most at risk, followed by airports in Mumbai, Kolkata, Bengaluru, Chennai, Hyderabad and Kochi, according to the model.

The new model for predicting global novel coronavirus cases has been developed by researchers from Humboldt University and Robert Koch Institute in Germany.

"The spread of the virus on an international scale is dominated by air travel," said the study.

"Wuhan, the seventh largest city in China with 11 million residents, was the relevant major domestic air transportation hub with many connecting international flights before the city was effectively quarantined on January 23, 2020, and the Wuhan airport was closed. By then the virus had already spread to other Chinese provinces as well as other countries," it added.

The researchers said that it is possible to estimate how likely it is that the virus spreads to other areas by looking at air travel passenger numbers.

"The busier a flight route, the more probable it is that an infected passenger travels this route. Using these probabilistic concepts, we calculate the relative import risk to other airports. When calculating the import risk, we also take into account connecting flights and travel routes that involve multiple destinations," said the study.

The top 10 countries and regions at risk of importing coronavirus cases are: Thailand, Japan, South Korea, Hong Kong, Taiwan, USA, Vietnam, Malaysia, Singapore and Cambodia, according to the model.

While Thailand's national import risk is 2.1%, it is 0.2% for India, found the research.

The foundation of the model is the worldwide air transportation network (WAN) that connects approximately 4,000 airports with more than 25,000 direct connections.

The model accounts for both, the current distribution of confirmed cases in mainland China as well as airport closures that were implemented as a mitigation strategy.

This network theoretic model is based on the concept of effective distance and is an extension of a model introduced in the 2013 paper "The Hidden Geometry of Complex, Network-Driven Contagion Phenomena" published in the journal Science.

The current outbreak of the 2019-nCoV virus started in Wuhan city, Hubei province, China. While the first cases were reported as early as December 8, 2019, the outbreak gained global attention on December 31, 2019, when the World Health Organization was alerted to "several cases of pneumonia" by an unknown virus.

The new virus was soon identified as a novel coronavirus and named 2019-nCOV. It belongs to the family of viruses that include the common cold and viruses such as SARS and MERS. On January 20, 2020, it was confirmed that the coronavirus can be transmitted between humans, greatly increasing the risk of a global spread.

The death toll due to the novel coronavirus outbreak in China has increased to 811 on Sunday, surpassing that of the Severe Acute Respiratory Syndrome (SARS) epidemic in 2003.

Although about 20 countries have confirmed cases, China has accounted for about 99 per cent of those infected. The first foreign victims of the virus both died on Saturday in Wuhan.

New Delhi, Jul 25: India reported a spike of 48,916 coronavirus cases on Saturday, according to the Union Ministry of Health and Family Welfare.

The total COVID-19 positive cases stand at 13,36,861 including 4,56,071 active cases, 8,49,431 cured/discharged/migrated. With 757 deaths in the last 24 hours, the cumulative toll reached 31,358.

Maharashtra has reported 3,57,117 coronavirus cases, the highest among states and Union Territories in the country.

A total of 1,99,749 cases have been reported from Tamil Nadu till now, while Delhi has recorded a total of 1,28,389 coronavirus cases.

According to the Indian Council of Medical Research (ICMR), 4,20,898 samples were tested for coronavirus on Friday and overall 1,58,49,068 samples have been tested so far.

May 20: Prime Minister K P Sharma Oli on Tuesday asserted that Lipulekh, Kalapani and Limpiyadhura belong to Nepal and vowed to "reclaim" them from India through political and diplomatic efforts, as his Cabinet endorsed a new political map showing the three areas as Nepalese territory.

Addressing Parliament, Oli said the territories belong to Nepal “but India has made it a disputed area by keeping its Army there”. “Nepalis were blocked from going there after India stationed its Army,” he said.

“India has deployed its troops in Kalapani since 1962 and our rulers in the past hesitated to raise the issue,” he said, asserting, “We will reclaim and get them back.”

The prime minister asserted that the Nepal government will make political and diplomatic efforts to reclaim the territory.

Oli also expressed the hope that India will “follow the path of truth, shown by Satya Meva Jayate, which is mentioned in the Ashoka Chakra, the national symbol of India”.

The prime minister’s remarks came a day after the Cabinet headed by him endorsed a new political map showing Lipulekh, Kalapani and Limpiyadhura under Nepal’s territory.

Foreign Minister Pradeep Kumar Gyawali said the official map of Nepal will soon be made public by the Ministry of Land Management. The move announced by Gyawali came weeks after he said that efforts were on to resolve the border issue with India through diplomatic initiatives.

Nepal''s ruling Nepal Communist Party lawmakers have also tabled a special resolution in Parliament demanding return of Kalapani, Limpiyadhura and Lipulekh to Nepal.

The Lipulekh pass is a far western point near Kalapani, a disputed border area between Nepal and India. Both India and Nepal claim Kalapani as an integral part of their territory - India as part of Uttarakhand’s Pithoragarh district and Nepal as part of Dharchula district.

Gyawali last week summoned the Indian Ambassador Vinay Mohan Kwatra and handed over a diplomatic note to him to protest against the construction of a key road connecting the Lipulekh pass with Dharchula in Uttarakhand.

India has said that the recently-inaugurated road section in Pithoragarh district in Uttarakhand lies completely within its territory. Indian Army chief Gen MM Naravane last week said that there were reasons to believe that Nepal objected to India''s newly-inaugurated road linking Lipulekh Pass with Dharchula in Uttarakhand at the behest of "someone else", in an apparent reference to a possible role by China on the matter.

He said there was no dispute whatsoever between India and Nepal in the area and road laid was very much within the Indian side.

The 80-KM-long strategically crucial road at a height of 17,000 KM along the border with China in Uttarakhand was thrown open by Defence Minister Rajnath Singh earlier this month.

Nepal has raised objection to the inauguration of the road, saying the "unilateral act" was against the understanding reached between the two countries on resolving the border issues. China on Tuesday said the Kalapani border issue is between India and Nepal as it hoped that the two neighbours could refrain from "unilateral actions" and properly resolve their disputes through friendly consultations.

After the endorsement of Nepal’s new map senior ruling party leader and member of Nepal Communist Party Standing Committee Ganesh Shah said the new move may escalate unnecessary tension between Nepal and India at a time when the country is fighting the coronavirus.

"The Nepal government should soon start a dialogue with India to resolve the matter through political and diplomatic moves," he said.

The new map includes 335-km land area including Limpiyadhura in the Nepalese territory.

The new map was drawn on the basis of the Sugauli Treaty of 1816 signed between Nepal and then the British India government and other relevant documents, which suggests Limpiyadhura, from where the Kali river originated, is Nepal''s border with India, The Kathmandu Post quoted an official at the Ministry of Land Reform and Management as saying.

India and Nepal are at a row after the Indian side issued a new political map incorporating Kalapani and Lipulekh on its side of the border in October last year.

The tension further escalated after India inaugurated the road link connecting Kailash Mansarovar, a holy pilgrimage site situated at Tibet, China, that passes through the territory belonging to Nepal.