Air India's jumbo B747 made two flights to Wuhan city, the ground zero of the coronavirus epidemic.
The World Health Organization has declared the outbreak a public health emergency of international concern.
Containing pandemics requires a multi-pronged approach: from mathematical analysis to the ability to rapidly develop drugs and vaccines.
The total number of confirmed cases is now more than 4,000 nationwide, says health commission.
Nepal confirms one case and Europe two in France as virus spreads quickly across countries.
Fifteen new deaths all took place in Wuhan, the city of 11 million where the deadly respiratory contagion first emerged.
The respiratory virus has claimed 18 lives since emerging from a seafood and animal market in the central city of Wuhan.
The coronavirus strain that emerged in the Chinese city of Wuhan in Hubei province has so far infected over 830 people.
Most of the 700 Indian students studying medicine and other courses in around Wuhan city have returned home due to holidays.
More than new research, better monitoring of vector-borne diseases and a safer environment are what can help us stay ahead of the mosquito, writes Ritwik Sharma
There is a clear correlation between cases reported and budgets over five years - as funding rose, cases declined