Page 114 of articles about swine-diseases

North American H1N1 influenza update

The usual pig viruses are H1N1, H3N2 and H1N2. The original H1N1 pig viruses have been largely replaced by poultry viruses in pigs. The H3N2 viruses were from humans originally. The H1N2 viruses are re-assortants from human viruses (H and N genes) and poultry viruses.

Taiwan - Foot and mouth disease: Sub-clinical infection

26-May-2009
In order to ensure the eradication of FMD virus, Chinese Taipei uses non-vaccinated pigs as sentinel animals on every farm. During the routine active surveillance in the livestock market, a pig was found NSP antibody positive. The prefecture animal disease control competent authority traced back to the original farm. The result of clinical investigation showed that all pigs on farm were healthy. Samples for serological tests and virus isolation were collected and sent to the National Laboratory. The laboratory confirmed positive results for NSP and negative for virus isolation. A total of 57 farms within 3-km-radius of the index farm have been under vigilant monitoring and no clinical or serological evidence of infection has been found.

Ireland - Department set to tackle salmonella

20-May-2009
The Department of Agriculture is to launch a new salmonella scheme in a bid to tackle worrying levels of the disease in the national pig herd. The EU average for salmonella taken from lymph node samples is 10.3pc. However, the figure for Ireland stands at between 15 and 20pc. Ireland tops the table when it comes to carcass contamination at slaughter, which stands at 20pc. The EU average is 8.3pc.
circovirosis

Risk and/or triggering factors of porcine circovirus

Between 1995 and 1997, at the beginning of an epizootic called “maladie de l’amagrissement du porcelet” (MAP), it was observed that the farms that were most affected and that had the most losses, generally presented obvious deviations from what we would consider to be a suitable management of the animals and facilities. This is why Dr. François Madec made a list of management practices with the aim of improving the anomalous situation observed.

United Kingdom - New scheme to improve health of pig herds

13-May-2009
A pig health improvement scheme is being rolled out in Yorkshire ahead of other regions after the county's pig farmers joined forces with Yorkshire Forward to tackle disease and welfare issues. It will include the mapping of all pig units in Yorkshire and Humberside and an attempt to determine their health status as well as looking at how disease enters the country and spreads.

FAO - Regional plan for FMD control approved

11-May-2009
International experts on Foot-and-Mouth disease (FMD) have agreed on a plan to control the infection in Western Eurasia and stop it spreading west to Europe and North Africa, following a serious epidemic in several Middle Eastern countries.

FAO urges countries to closely monitor H1N1 in pigs

07-May-2009
After the detection of the A/H1N1 virus in pigs in Canada transmitted by a human, FAO has again urged national authorities and farmers to carefully monitor pigs and investigate any possible occurrences of influenza-like symptoms in domestic animals.

OIE - Novel A/H1N1 influenza virus identified in a Canadian swine herd

06-May-2009
The novel A/H1N1 influenza virus has been identified and being very closely related to the human strains based on the genes sequenced so far. Full characterisation is continuing and so is virus isolation in eggs. It is highly probable that the pigs were exposed to the virus from a farm worker who had recently returned from Mexico and had been exhibiting flu-like symptoms.

Canada - An Alberta Swine Herd Investigated for H1N1 Flu Virus

05-May-2009
The Canadian Food Inspection Agency (CFIA) indicates that it has found H1N1 flu virus in a swine herd in Alberta. The safety of the food supply is not affected and Canadian pork continues to be safe to eat. While further testing is needed to more fully characterize the virus, the CFIA is taking a precautionary approach. The herd has been placed under quarantine, and the Agency is working with public health colleagues to determine the most appropriate next steps to ensure that public and animal health remain protected. The chance that these pigs could transfer virus to a person is remote.

North-American human influenza

It is produced by a virus with genetic material from porcine, human and avian viruses which has shown the ability unusually for such a virus to transmit from human to human. The virus appears to have 2 of 8 gene segments that derive from eurasian swine viruses. The NA and matrix genes of the new virus have not been seen in humans or pigs before.

Swine influenza: epidemiology and emergence of new viruses

The first swine influenza viruses were all H1N1 and were for about 60 years in North America. In the middle 1980’s, there appeared in European pigs H3N2 viruses that were derived originally from humans and had adapted to pigs and were therefore known as human-like H3N2 viruses. These viruses have since appeared in other parts of the world most notably as H3N2 in the USA in 1998. These viruses however contained bits of human, avian and swine viruses and were therefore called triple re-assortants.