On farms, the U.S. swine virus recurrence

Nationwide epidemic VEDS repeated at 30% previously infected farms, according to the American Association of Veterinary pigs.

Farm in Indiana first officially confirmed that suffered a second outbreak of deadly swine virus , triggering fears that a disease that wiped out 10 % of the population of pigs in the United States, it will be harder to overcome than planned producers and veterinarians .

Tuesday veterinarian farm publicly announced relapse virus epidemic diarrhea fever ( VEDS ) which destroyed 7 million pigs and pork prices increased to record highs in the United States since the first outbreak of a year ago.

Government measures to control the disease based on the assumption that individuals who recover previously VEDS are immune to the virus, and reinfection was excluded at least for several years. Farms where pigs had been ill , had not previously recorded secondary outbreak.

But a year later, after the virus was detected , relapses occurred on farms , which, however, were not so far publicly acknowledged. These flashes are repeated calling efforts and measures to halt the disease , which is always fatal for piglets .

USDA fights against recurrence of trying to develop immunity in sows by vaccines .

Nationwide epidemic VEDS repeated on 30 % of previously infected farms , according to the American Association of Veterinary pigs.

Since the onset of the disease swine futures reached a record high , and in the last month rose by almost 25% to $ 113.75 per hundredweight . Retail pork prices also set new records , the wave of relapse can cause big losses in the U.S. pig population .

On a farm in Indiana in March 2014 genetic analysis showed the same strain VEDS who suffered a farm in May 2013 .

Piglets born from sows infected a second time , the mortality rate was about 30% compared with 100 percent mortality of newborn piglets during the first outbreak .

Veterinarians and other experts were unable to predict the duration of immunity against VEDS pigs after recovery because the disease came to the United States last year alone .

Some experts believed that pigs undergoing disease is a natural immunity against VEDS within three years , as is the case with similar disease - infectious gastroenteritis.

Experts farm in Indiana reported that the farm constantly held unprecedented measures to sanitize , so it's hard to find out where the virus reappeared .

Breeders in the United States are on the verge of despair , because no vaccine is not yet able to fully protect pigs against the disease.

VEDS transmitted from pig to pig through contact with manure containing the virus. Further, it is transmitted from farm to farm by truck , and many veterinarians also believe the virus is spread through food.

One potential cause of recurrence of the disease consists in the fact that high levels of the virus in the manure of pigs destroy natural immunity . Immunity plays a key role in the ability to control the spread of the virus.

Preliminary studies of immunity, conducted by the National Pork Board on confirm that immunity does not work for long . Council raised more than $ 2 million for research VEDS .

Relapse is a concern among farmers and processors of pork across the country , as re- flash VEDS continues to spread , and effective means to stop it has not been found .

Source: agro2b.ru