A/H1N1 Flu Virus First Infects Humans Months before Outbreak: University Study
    2009-06-12 21:45:57     Xinhua      Web Editor: Zhang Jin
A study conducted by University of Hong Kong (HKU) Li Ka Shing Faculty of Medicine showed that the initial transmission of A/H1N1 flu virus to humans may take place in early 2009, months before the outbreak was detected.

In a press release on Friday, the HKU said their study used evolutionary analysis to estimate the timescale of the origins and the early development of the swine-origin influenza A/H1N1 virus ( S-OIV) epidemic. The results show that the S-OIV virus resulted from the mixing of genes from two viruses that had been circulating in swine for at least 10 years.

They also found that the initial transmission to humans very likely occurred in January 2009, several months before the outbreak in Mexico was first detected in March 2009.

An international collaboration between researchers that the State Key Laboratory of Emerging Infectious Diseases (SKLEID), The HKU Li Ka Shing Faculty of Medicine, University of Edinburgh, University of Arizona and University of Oxford has investigated the origin and evolution of this newly emerged virus using data from long-term influenza surveillance conducted in Hong Kong .

The results highlight the need for systematic surveillance of influenza in swine, and provide evidence that new genetic elements in swine can result in the emergence of viruses with pandemic potential in humans.

"Despite widespread influenza surveillance in humans, the lack of systematic swine surveillance allowed for the undetected persistence and evolution of this potentially pandemic strain for many years," said the research team in the press.

This collaboration has resulted in a publication "Origins and evolutionary genomics of the 2009 swine-origin H1N1 influenza A epidemic" in the prestigious scientific journal Nature.


CRIENGLISH.com claims the copyright of all material and information produced originally by our staff. No person, organization and/or company shall reproduce, disseminate or broadcast the content in any manner whatsoever without the express written permission of CRIENGLISH.com.

CRIENGLISH.com holds neither liability nor responsibility for materials attributed to any other source. Such information is provided as reportage and dissemination of information but does not necessarily reflect the opinion of or endorsement by CRI.

Editor's Pick more »

Chinese Press more »

Talk to CRI

M Zone
Tiger Wong Back with Her New Album 'Simple Or Not'
Taiwanese singing star Tiger Wong was back in Beijing on November 27 and 28 for two good reasons.
Duggy Day's Ski Trip to Wanlongbayi
On Sunday November 21st CRI's Duggy Day headed out to Wanlongbayi which is located west of Beijing.
The Sound Stage
China Revealed
My Chinese Life
Photo Gallery
Learn Chinese
"In" Chinese
Chatting in Chinese
Pop Culture
Traditional Culture
Living Chinese
Chinese Studio
Chinese Class
Learn English
Special English
Pop Chart
Everyday English
Fabulous Snaps
CRI News
China.org.cn  | Xinhua  | People's Daily Online   |  CNTV.cn  | China Daily  |  Global Times  | China Job  |  China Tibet Online  | Taiwan.cn  | eBeijing  | Beijing Today  | China-Eurasia Expo  | APEC Yiwu Conference  | Chinese Embassy in S.Africa  | Chinese Embassy in Australia  | Chinese Embassy in NZ