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New Delhi, Feb 27: An Indian Air Force aircraft on Thursday evacuated 76 Indians and 36 foreign nationals from the coronavirus-hit Chinese city of Wuhan.

The C-17 Globemaster III transport aircraft was sent to Wuhan on Wednesday and it carried 15 tonnes of medical supplies for coronavirus-affected people in China.

On its return, the aircraft brought back 112 people, including 23 citizens from Bangladesh, six from China, two each from Myanmar and the Maldives and one each from South Africa, the US and Madagascar.

Earlier, India had evacuated around 650 Indians from Wuhan in two Air India flights.

“In all 723 Indian nationals and 43 foreign nationals have been evacuated from Wuhan, China, in these three flights,” the Ministry of External Affairs (MEA) said.

On the medical supplies delivered by India to China, the MEA said they would help augment the country’s efforts to control the coronavirus outbreak which had been declared as a public health emergency by the World Health Organisation.

“The assistance is also a mark of friendship and solidarity from the people of India towards the people of China as the two countries also celebrate 70th anniversary of establishment of diplomatic relations this year,” it said.

Feb 22: A 20-year-old Chinese woman from Wuhan, the epicentre of the coronavirus outbreak, travelled 400 miles(675 km) north to Anyang where she infected five relatives, without ever showing signs of infection, Chinese scientists reported on Friday, offering new evidence that the virus can be spread asymptomatically.

The case study, published in the Journal of the American Medical Association, offered clues about how the coronavirus is spreading, and suggested why it may be difficult to stop.

"Scientists have been asking if you can have this infection and not be ill? The answer is apparently, yes," said Dr. William Schaffner, an infectious disease expert at Vanderbilt University Medical Center, who was not involved in the study.

China has reported a total of 75,567 cases of the virus known as COVID-19 to the World Health Organization (WHO) including 2,239 deaths, and the virus has already spread to 26 countries and territories outside of mainland China.

Researchers have reported sporadic accounts of individuals without any symptoms spreading the virus. What's different in this study is that it offers a natural lab experiment of sorts, Schaffner said.

"You had this patient from Wuhan where the virus is, travelling to where the virus wasn't. She remained asymptomatic and infected a bunch of family members and you had a group of physicians who immediately seized on the moment and tested everyone."

According to the report by Dr Meiyun Wang of the People's Hospital of Zhengzhou University and colleagues, the woman travelled from Wuhan to Anyang on Jan. 10 and visited several relatives. When they started getting sick, doctors isolated the woman and tested her for coronavirus. Initially, the young woman tested negative for the virus, but a follow-up test was positive.

All five of her relatives developed COVID-19 pneumonia, but as of Feb. 11, the young woman still had not developed any symptoms, her chest CT remained normal and she had no fever, stomach or respiratory symptoms, such as cough or sore throat.

Scientists in the study said if the findings are replicated, "the prevention of COVID-19 infection could prove challenging."

Key questions now, Schaffner said, are how often does this kind of transmission occur and when during the asymptomatic period does a person test positive for the virus.