20 million dead in China.
Pig “high fever disease” has already been discovered in 8 counties (districts) in the [Guangxi Autonomous] Region. Among these, pig “high fever disease” is suspected to have occurred in 92 administrative villages of 10 townships in Cenxi City. The disease has been found in 4875 pigs, with 287 deaths. Although there are no reports of disease within Nanning Municipality at this time, earlier this year  pig deaths occurred for unknown reasons in 2 or 3 counties (districts) in Nanning. Some medium and small pig farms and pig-raising households had not implemented pig “high fever disease” vaccination. The circumstances of prevention and control activities are grim.
The disease, which in China is called “high fever disease”, was initially attributed to a mix infection of PRRS, classical swine fever, (CSF) and porcine circovirus (PCV-2), and probably additional agents. According to China’s last notification to the OIE, dated 9 May 2007, the causal agent of an outbreak in Guandong is PRRSV. The report indicates that the reason for notification is “change in epidemiology” and that the manifestation of the disease is “sub-clinical infection”. However, the apparent case fatality rate (20 percent) does not fit the description “sub-clinical”.
Clearly, more details on the PRRS virus, currently circulating in vast areas of China and Viet Nam, are urgently needed. This should include the exclusion of other disease agents (including avian influenza and CSF), studies into the pathogenicity of the Chinese PRRSV and its genotyping. Such data might indeed be anticipated soon, since the Chinese notification (under “epidemiological comments”) indicates that the case is “probably caused by highly pathogenic PRRS virus” and that “laboratory diagnosis is ongoing”.
Given the lack of transparency in China’s investigation of the melamine-poisoned pet food scandal,
Yet no one stopped Mao’s company from churning out bags of food powders and belching smoke — until one day last month when, in the middle of the night, bulldozers tore down the facility.
It wasn’t authorities that finally acted: Mao himself razed the brick factory — days before the investigators from the U.S. Food and Drug Administration arrived in China on a mission to track down the source of the tainted pet food ingredients.
one should probably expect the epidemic to widen rather than die down in the near future.