Some 11,257 pigs have been fished out of the Huangpu River in Shanghai, China, according to the authorities
. This river provides drinking water to the residents of Shanghai, where two people have recently died of a rare strain of avian flu.
The Shanghai Municipal Agricultural Commission and the Shanghai Animal Disease Prevention and Control Center were commissioned to test randomly picked carcasses in search of diseases and virus.
Out of 34 samples of pig carcasses, no bird flu virus was found. So far, only one pig tested positive for porcine circovirus, which can be deadly for pigs but is harmless for humans.
After the reported deaths of two men due to H7N9 avian influenza, authorities want to rule out that the pigs were also infected by this rare disease.
According to China Daily, Only three cases of human infection of H7N9 have been found, relatively little research has been done on it. (An) expert team is working to study the toxicity and human-infection capacity of the virus.
Currently there are no vaccines against the H7N9 bird flu virus.