Presidential poll: Pranab to visit Kolkata today

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.

Bhopal, Jul 25: Madhya Pradesh chief minister Shivraj Singh Chouhan said on Saturday he has tested positive for the coronavirus disease (Covid-19).

Chouhan made the announcement in a series of tweets.

“My dear countrymen, I had symptoms of COVID-19 and after the test, my report has come back positive. I appeal to all my colleagues that whoever came in contact with me, must get their corona test done. And my close contacts should quarantine themselves,” Chouhan said in a tweet in Hindi.

“If COVID19 is treated on time, a person is completely cured. I have been reviewing the status of corona infection every evening since March 25. I will try to review corona situation through video conferencing as much as possible now,” he added.

The chief minister said the review meeting will now be held by home minister Narottam Mishra, urban development and administration minister Bhuppendra Singh, health education minister Vishvas Sarang and health minister Dr Prabhuram Choudhary in his absence.

“I will also continue to do everything possible to help control COVID19 in the state during treatment,” he said.

One of Chouhan’s ministerial colleagues tested positive for Covid-19 late on July 22.

The chief minister along with the minister, the Bharatiya Janata Party’s state unit president VD Sharma and state unit general secretary (organisation) Suhas Bhagat had visited Lucknow in a government plane on July 21 to attend the funeral of MP governor Lalji Tandon who died away in the Uttar Pradesh capital, his hometown. during hospitalisation.

The minister is admitted to a private medical college’s teaching hospital in Bhopal.