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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.

Kochi, Jan 21: A special court here on Tuesday sent two students, who were arrested under the Unlawful Activities Prevention Act (UAPA) case in Kozhikode last November, to the custody of National Investigation Agency (NIA) for a day.

The NIA court ordered that the duo, who were in judicial custody till now, to be produced before it tomorrow.

In its application, the NIA had said that the accused must be interrogated on the basis of digital records and sought custody of the duo for a week.

However, the defendant argued that no new evidence had been found against the accused and therefore no custody should be granted.

During an earlier hearing, the two had told the court, "We are not Maoists. We are CPI (M) activists. The Chief Minister, who says we are Maoists, should bring proof of whom we killed and where we bombed. In the last election, we have served as CPI (M), booth agents. We are the ones who went out to vote and pasted posters for the party."

The two were charged under Sections 20 (punishment for being a member of terrorist gang or organisation), 38 (offence relating to membership of a terrorist organisation) and 39 (offence relating to support given to a terrorist organisation) of the UAPA.

Allen and Thaha, students of law and journalism respectively of Kannur University, were taken into custody by the police from Pantheerankavu in Kozhikode on November 1 last year.

New Delhi, Jan 31: Substantial competition and low tariff rates by telecom operators since 2016 have led to a financial stress in the sector, the Economic Survey said on Friday.

The data price in the country came down by over 99 per cent during 2016-2019, making it among the lowest tariff in the world, according to the survey.

"Since 2016, the sector has witnessed substantial competition and price cutting by the telecom service providers (TSPs), creating financial stress in the sector. As a result, the sector is experiencing consolidation. While some operators have filed for bankruptcy, others have merged, in their quest to improve viability," the survey report said.

In April-June 2019, the price of data was Rs 7.7 per gigabyte (GB) as compared to Rs 200 per GB in June 2016, it added.

"The Average Revenue Per User (ARPU) for GSM based mobile services has also gone down substantially from Rs 126 in June 2016 to Rs 74.30 in June 2019," the survey said.

The tariff war started in the market with entry of new telecom operator Reliance Jio in September 2016.

"BSNL and MTNL are also affected by the tariff war that has impacted their cash flow resulting in mounting losses," the survey said.

The financial health of the public sector telecom firms plummeted to a level where they have been finding hard to pay employees salaries in time.

The government has drawn up a plan to revive these PSUs which is still in works.

The revival plan consists of several measures, including reduction of staff cost through voluntary retirement scheme, allotment of spectrum for 4G services, monetisation of land and building, tower and fibre assets of BSNL and MTNL, debt restructuring through sovereign guarantee bonds and ''in-principle'' approval for merger of BSNL and MTNL.

The survey said that the wireless telephony now constitutes 98.27 per cent of all subscriptions whereas share of landline telephones now stands at only 1.73 per cent where market share is dominated by private sector players.

"The overall tele-density in India stands at 90.45 per cent, the rural tele-density being 57.35 per cent and urban teledensity being 160.71 per cent at the end of September 2019. The private sector dominates with a share of 88.81 per cent (106.06 crore connections) at the end of September, 2019 while the share of public sector was 11.19 per cent (13.36 crore connections)," the survey said.

The lower price of data has also lead in surge of broadband connections and average consumption of the internet.

Total broadband connections increased by about ten times, from 6.1 crore in 2014 to 59.46 crore in June 2019, the survey said.

The number of internet subscribers (both broadband and narrowband put together) stood at 66.53 crore at the end of June 2019 as compared to 25.16 crore in 2014.

The number of mobile internet subscribers was 64.36 lakh at the end of June 2019 while the number of wireline internet subscribers was 2.17 crore.

"India is now the global leader in monthly data consumption, with average consumption per subscriber per month increasing 157 times from 62 MB in 2014 to 9.8 GB in June 2019. The cost of data has also reduced substantially, enabling affordable internet access for millions of citizens," the survey said.