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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, Jun 30: Short video making app TikTok, one of the 59 apps banned by the Central government on Tuesday, has said that it complies with all data privacy and security requirements under the Indian law and has not shared any information of its users in India with any foreign government, including the Chinese Government.

Taking to microblogging site Twitter, Tiktok India posted the statement issued by Nikhil Gandhi, Head of TikTok, India.

"The Government of India has issued an interim order for the blocking of 59 apps, including TikTok and we are in the process of complying with it. We have been invited to meet with concerned government stakeholders for an opportunity to respond and submit clarifications. TikTok continues to comply with all data privacy and security requirements under Indian law and has not shared any information of our users in India with any foreign government, including the Chinese Government," reads the statement.

"Further, if we are requested to in the future we would not do so. We place the highest importance on user privacy and integrity. TikTok has democratized the internet by making it available in 14 Indian languages, with hundreds of millions of users, artists, story-tellers, educators and performers depending on it for their livelihood, many of whom are first-time internet users," the statement further reads.

Amid border tensions with China in Eastern Ladakh, the Centre had on Monday banned 59 mobile apps including Tik Tok, UC Browser and other Chinese apps "prejudicial to sovereignty and integrity and defence" of the country.

A senior official at the IT ministry said the prime reason to block the apps under section 69 A of Information Technology Act is to stop the violation and threat to the security of the state and public order and to plug the data leaks.

"Almost all of them have some preferential Chinese interest. Few are from countries like Singapore. However, the majority have parent companies which are Chinese," the official said.

This move will safeguard the interests of crores of Indian mobile and internet users. This decision is a targeted move to ensure safety and sovereignty of Indian cyberspace, Ministry of Information Technology said.