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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.

Srinagar, Jan 15: The Jammu and Kashmir administration on Tuesday evening allowed mobile Internet in parts of Jammu region and broadband in establishments providing essential services, days after the Supreme Court ordered a review of the curbs imposed in the Union Territory.

The order comes into effect from January 15 and shall remain in force for seven days, a government communication said.

In a three-page order, the administration asked Internet service providers to offer broadband facility (with Mac binding) to all institutions dealing with essential services such as hospitals, banks and government offices.

In order to facilitate tourism, the broadband Internet services would be provided to hotels and tour and travel establishments, the order said.

Mac Binding essentially means to enforce a client machine to work from a particular Internet Protocol address.

"Prior to giving such facility, the service providers have been asked to install necessary firewalls and carry out white-listing of sites that would enable government websites and website dealing with essential services like e-banking," the order said.

However, all social media sites remain out of bounds. "There shall be complete restrictions on social media applications allowing peer-to-peer communication and virtual private network applications for the time being," the order said.

The institutions and government offices that are being provided Internet access shall be responsible to prevent misuse, according to the order.

It said the 2G mobile connectivity on post-paid mobiles for accessing white-listed websites including e-banking will be allowed in districts of Jammu, Samba, Kathua, Udhampur and Reasi -- all in the Jammu region.

The order said that the police has brought material relating to the terror modules operating in Jammu and Kashmir including handlers from across the border who are attempting to aid and incite people by transmission of fake news and targeted messages through use of Internet.

The relaxation came days after the Supreme Court said access to the Internet is a fundamental right under Article 19 of the Constitution.

The SC verdict had come on Friday on a batch of pleas challenging the curbs imposed in Jammu and Kashmir after the Centre's abrogation of provisions of Article 370 on August 5 last year.

The court had also asked the Jammu and Kashmir administration to review within a week all orders imposing curbs in the Union Territory.

It had asked the J-K administration to restore Internet services in institutions such as hospitals and educational places providing essential services.

The J-K administration's Tuesday communication said that in view of the Supreme Court directions, the situation has been reviewed and Internet has been opened whereever it was possible keeping in view the security consideration.

In Kashmir, 400 additional Internet kiosks will be established, besides the 900 terminals which are already operational in the Valley.