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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, May 29: More than 38,000 doctors, including those retired from the Armed Forces Medical Services, have volunteered to help the government in its fight against COVID-19 pandemic, a senior official said on Friday.

On March 25, the government had made an appeal to doctors, including the retired ones, to come forward and join the efforts to fight the pandemic.

"38,162 volunteer doctors, including retired government, Armed Forces Medical Services, public sector undertaking or private doctors have signed up with the government to battle COVID-19 pandemic," the official said.

The official further said Niti Aayog has sent a list of names of these doctors to Ministry of Health and Family Welfare and National Disaster Management Authority (NDMA).

In a statement posted on Niti Aayog's website on March 25, the government had said those who wish to contribute to this noble mission may register themselves through a link provided on the Aayog's website.

"The Government of India requests for volunteer doctors who are fit and willing to be available for providing their services in the public health facilities and the training hospitals in the near future.

"We appeal to such doctors to come forward at this hour of need. You could also be a retired government, Armed Forces Medical Services, public sector undertaking or a private doctor," the statement had said.

It had noted that in case the outbreak leads to a high number of infected individuals, India's public health facilities will face tremendous load to take care of a large number of patients.

Many countries, including the US, Italy, the UK and Vietnam, had also urged retired health workers to come back to work amid the pandemic.

The number of COVID-19 cases in India has climbed to 1,65,799, making it the world's ninth worst-hit country by the coronavirus pandemic.

The Health Ministry on Friday said the death toll due to COVID-19 rose to 4,706 in the country.

New Delhi, Jun 19: Petrol price on Friday was hiked by 56 paise per litre and diesel by 63 paise a litre, taking the cumulative increase in rates to Rs 7.11 and Rs 7.67 per litre respectively in less than two weeks.

Petrol price in Delhi was hiked to Rs 78.37 per litre from Rs 77.81, while diesel rates were increased to Rs 77.06 a litre from Rs 76.43, according to a price notification of state oil marketing companies.

Rates have been increased across the country and vary from state to state depending on the incidence of local sales tax or VAT.

This is the 13th daily increase in rates in a row since oil companies on June 7 restarted revising prices in line with costs, after ending an 82-day hiatus in rate revision.

In 13 hikes, petrol price has gone up by Rs 7.11 per litre and diesel by Rs 7.67 a litre.

The freeze in rates was imposed in mid-March soon after the government hiked excise duty on petrol and diesel to shore up additional finances.

Oil PSUs Indian Oil Corp (IOC), Bharat Petroleum Corp Ltd (BPCL) and Hindustan Petroleum Corp Ltd (HPCL) instead of passing on the excise duty hikes to customers adjusted them against the fall in the retail rates that was warranted because of fall in international oil prices to two decade low.

International oil prices have since rebounded and oil firms are now adjusting retail rates in line with them.