A new virus linked to SARS has the possibility of spreading between humans, though the risk of transmission appears to be low at the moment, Chinese officials said.

The outbreak of a new coronavirus in central China has killed one man and infected 41 people in the city of Wuhan.

The Wuhan Municipal Health Commission said in a public notice that one woman may have contracted the virus from her husband, who fell ill after working at the Huanan Seafood Wholesale Market.

Most of the patients who received preliminary diagnoses of the new coronavirus had worked at or visited the seafood market.

But the woman in this case said she had no exposure to the market at all.

China's toxic "blue tears" bloom in greater numbers Show all 12 1 /12 China's toxic "blue tears" bloom in greater numbers China's toxic "blue tears" bloom in greater numbers Glowing blooms of “blue tears” in China’s sea may dazzle tourists with their sparkle but as their numbers grow, so too do fears about their toxic potential. Yu-Xian Yang / Lienchiang County Government China's toxic "blue tears" bloom in greater numbers “Blue tears”, or "sea sparkles", are plankton found in coastal areas that can light up the coast due to a unique trait that causes them to turn luminous blue when disturbed. Muto Lisp China's toxic "blue tears" bloom in greater numbers This visual treat has led to beaches where the plankton are found becoming popular tourist destinations in recent years but despite their enchanting appearance, the plankton could prove detrimental in the long term. Muto Lisp China's toxic "blue tears" bloom in greater numbers Though they pose no direct threat to humans, the concern with "blue tears" is that they secrete ammonia, which can prove harmful to ocean life in high levels as it depletes oxygen levels in the surrounding water. Sheng-Fang Tsai / National Taiwan Ocean University China's toxic "blue tears" bloom in greater numbers Scientists have been tracking the plankton off the coast of China and a new report finds that they have been blooming in greater numbers in recent years, in turn posing a greater threat. Muto Lisp China's toxic "blue tears" bloom in greater numbers The report suggests that the growth could be put down to many factors including warmer temperatures and an excess of nutrients entering the sea due to increased use of fertiliser. Sander van der Wel China's toxic "blue tears" bloom in greater numbers If this is the case, then the blooms may continue to grow in coming years. Muto Lisp China's toxic "blue tears" bloom in greater numbers This series of images shows how the 'blue tears' emit a luminescence when distrurbed (1 of 3) Sheng-Fang Tsai / National Taiwan Ocean University China's toxic "blue tears" bloom in greater numbers This series of images shows how the 'blue tears' emit a luminescence when distrurbed (2 of 3) Sheng-Fang Tsai / National Taiwan Ocean University China's toxic "blue tears" bloom in greater numbers This series of images shows how the 'blue tears' emit a luminescence when distrurbed (3 of 3) Sheng-Fang Tsai / National Taiwan Ocean University China's toxic "blue tears" bloom in greater numbers In great numbers, "Blue tears" are a form of red tide, a bloom of algae that becomes so dense as to pose a threat to its surrounding environment Bruce Anderson China's toxic "blue tears" bloom in greater numbers They are found all over the ocean but the "blue tears" off the east coast of China have been the focus of scientists in recent years Muto Lisp

Hong Kong health official Chuang Shuk-kwan told local media it is possible the husband brought food from the market home that then infected her.

But it is also possible that he infected her because the wife did not exhibit symptoms until days after her husband.

Mr Chuang added the threat of human-to-human transmission remains low as hundreds of people, including medical professionals, have been in close contact with infected individuals and have not been infected themselves.

The outbreak has sparked panic and vigilance around Asia, with airports ramping up temperature screening at airports ahead of the Lunar New Year holiday which begins on 25 January.

But a woman has been quarantined in Thailand after she was found to be carrying a mysterious strain of a virus linked to the outbreak.

She had travelled from Wuhan to Thailand as a tourist and was identified and hospitalised by Thai officials on 8 January.

It is the first instance of the new virus being detected outside China. The World Health Organisation has issued guidance on how to detect and treat anyone with symptoms of the new virus.

“WHO reiterates that it is essential that investigations continue in China to identify the source of this outbreak and any animal reservoirs or intermediate hosts,” it said.

“The possibility of cases being identified in other countries was not unexpected and reinforces why WHO calls for on-going active monitoring and preparedness in other countries.”