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EYE ON CHINA
African swine fever virus isolated in Northeast China
Studies showed the virus is virulent and transmissible among domestic pigs

Chinese researchers have successfully isolated an African swine fever virus, which could contribute to more knowledge of the organism, and may also lead to new methods for prevention and control, according to a research institute in northeastern China.

The virus, called Pig/HLJ/18, was isolated from a sample taken from an animal at a farm hit by an African swine fever outbreak last year in Jiamusi, Heilongjiang province.

Studies showed that the virus is virulent and transmissible among domestic pigs, the Harbin Veterinary Research Institute said.

During tests, pigs injected with the virus displayed symptoms such as fever within three or four days, and all died within six to 10 days. Pigs that were not directly injected but lived with the other pigs also got the disease and died, said Zhao Dongming, a leading author of the research, which was published in Emerging Microbes and Infections.

The virus does not affect humans.

The findings highlighted the necessity in the control and prevention of African swine fever in China, which has more than half the world's pig population.

Currently, diagnoses in China have been made based on detection of a viral gene, so isolation of the virus will help in understanding and controlling the disease, he said.

"It is still not known if a single virus invaded China and caused all these outbreaks or if different viruses are responsible," Zhao said. "More viruses need to be isolated and analysed to fully understand the spread of the disease and to develop an effective control strategy."

More than 110 African swine fever outbreaks have occurred in China since August, when the first case was reported in Shenyang, Liaoning province. The outbreaks resulted in tens of thousands of pigs being culled to control the disease.

The spread has since been under control, with fewer outbreaks reported.

Because the virus is deadly to pigs, with virtually 100 per cent mortality, disease control and prevention measures are being carried out, such as banning the movement of live pigs in areas with outbreaks and banning kitchen leftovers as pig feed.

There is currently no vaccine for African swine fever because of its complex nature, which allows it to easily evade animals' immune systems. China has urged its research institutes to intensify study and development of vaccines to fight the virus.

Source: China Daily

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EDITORS' CHOICE  
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APBN Editorial Calendar 2019
January:
Taiwan Medical tourism
February:
Marijuana as medicine — Legal marijuana will open up scientific research
March:
Driven by curiosity
April:
Career developments for researchers
May:
What's cracking — Antibodies in ostrich eggs
June:
Clinical trials — What's in a name?
Editorial calendar is subjected to changes.
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