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African swine fever. Viruses survive in sunlight for up to a thousand days. <>
The researchers found that the African swine fever virus is very resistant to low temperatures, but not high temperatures, and its activity is stronger in low temperature environments. The activity of African swine fever virus in meat products is relatively stable. Frozen meat, medium-cooked meat, and some meat products can survive for months to years.
Especially in low temperature environments, such as frozen meat, the African swine fever virus can survive for 1,000 days. And can live in a contaminated pigsty for at least a month. <>
However, the African swine fever virus also has a weakness, that is, it is not tolerant to high temperatures. The African swine fever virus survives at 56 and can be killed by heating for 70 minutes. When the temperature reaches 60, it only takes half an hour to inactivate.
In short, the activity of ASFV decreases with increasing temperature. Therefore, under natural conditions, the survival time of ASFV varies depending on the environment, such as 11 days in feces at room temperature, 1 month in contaminated pig houses, and 110 days in frozen meat. To prevent ASF virus, caustic soda can be used.
and lime. If consumers are upset about the pork they are buying, it must be remembered that the pork should be cooked for as long as possible. <>
First of all, do a good job of preventive measures in the pig farm, strictly control the entry and exit of pig farm vehicles, and do a good job in the disinfection of entering and exiting vehicles. As much as possible, they should be cultivated by themselves to reduce the introduction of foreign countries. Do a good job in feeding management, regular immunization, improve and enhance the immunity of pigs. Don't use swill.
Feed the pigs. In addition, it is better not to feed with meat and bone meal and protein powder. In summary, the African swine fever virus is a virulent infectious disease.
Since it is an infectious disease, it is inseparable from the virus**, the route of transmission and susceptible animals. As long as any link in the middle is removed, the swine fever virus will not spread again. Therefore, when you eat pork, you must cook it, which is also the best and only way to prevent African swine fever.
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As long as it is in a 60-degree environment, it can only survive for 10 minutes. We can strengthen the disinfection of life, and we should also pay attention to the mode of life, but also pay attention to the protection of the body, but also pay attention not to go to some dirty places, but also pay attention to cleaning our own hygiene frequently, so as to better prevent.
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In fact, the African swine fever virus must have parasitic cells or objects to survive for a slightly longer time, if it is a single African swine fever virus, it will die in seconds. At room temperature, ASF virus can survive for one to two months. The African swine fever virus is very sensitive to temperature, the higher the temperature, the shorter the survival time of the swine fever virus, if it is above 70 degrees, it can be said to be a direct death.
However, under different environmental conditions, the survival time of ASF virus is also different. The longest time the African swine fever virus can survive is 1,000 days, or up to three years, in frozen meat.
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The virus survives for a few months at moderate temperatures, weeks at 25 degrees to 37, and 70 minutes at 56. If you want to prevent this disease, you must first choose a functional factory structure and equipment, and have professional personnel, uncompromising execution, strict implementation of biosecurity, and disinfection of all places.
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About 30 days.
African swine fever. The survival time of the virus under natural conditions depends on the environment in which it is present, and the survival time of different environments is also different, generally it can survive for about 110 days in frozen meat, about 11 days in feces, and about 30 days in pigsty. The African swine fever virus is not resistant to high temperatures and is resistant to strong acids.
Strong alkalis and other substances are sensitive, and they can be killed in 70 minutes at a high temperature of 56. In conclusion, the activity of ASFV decreases with increasing temperature.
Non-distemper virus infection mechanisms.
If you suspect African swine fever, you will take necessary measures, such as symptomatic, give fever injections to the affected pigs, African swine fever virus is different from the existing virus, after the onset of infection in the pig herd, the incubation period is as short as 4 days, the longest is 19 days, and 2-3 days after infection will be in the tonsils and mandibular lymph nodes.
Macrophages replicate, but as long as the number of viruses is small, it will not show obvious clinical manifestations, which is also the first stage of many positive pigs turning negative.
Fever is present as long as clinical manifestations are present.
Vomiting, miscarriage, etc., at this time, the virus has entered the bloodstream and travels through the blood circulation to the organs of the body. At this time, the fever reduction injection, for the pig body, can only relieve temporary symptoms, and after the fever is reduced, the interval of 1-2 days, the body temperature will be ** again or drop sharply below 38 degrees, about another 2-3 days, there will be death.
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African swine fever does not infect humans.
African swine fever is not a zoonotic disease and does not infect humans. At the same time, the high temperature can kill the African swine fever virus, and 60 can be inactivated by continuous heating for 20 minutes.
The activity of African swine fever virus in meat food is relatively stable, frozen meat, semi-cooked meat, and some meat products, it can survive for several months to several years, African swine fever virus can survive for up to 1000 days in low temperature environment, and can survive for at least one month in contaminated pig pens.
Mode of transmission. Natural Host and Transmission Background: The African swine fever virus has a relatively single host, which will only infect pigs and will not spread to other animals, and the Blunt Tick is the natural host and main vector of the virus, and pigs of any age and breed can be infected with the virus.
Humans will not be infected with ASF by eating pork that contains ASF. Healthy pigs are transmitted by direct contact with poisonous pigs or sick pigs or by drinking contaminated swill, forage, feed, and drinking water.
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AbstractThe survival time of African swine fever virus under natural conditions depends on the existing environment, and the survival time of different environments is also different, generally it can survive for about 110 days in frozen meat, about 11 days in feces, and about 30 days in pigsty. The African swine fever virus is not resistant to high temperatures, and is sensitive to strong acids, strong alkalis and other substances, and can be killed in 70 minutes at a high temperature of 56. In conclusion, the activity of ASFV decreases with increasing temperature.
How long can African swine fever survive on humans?
The survival time of African swine fever virus under natural conditions depends on the environment, and the survival time of different environments is also different, generally it can survive for about 110 days in frozen meat, about 11 days in feces, and about 30 days in pigsty. The African swine fever virus is not resistant to high temperatures, and is sensitive to strong acids, strong alkalis and other substances, and can be killed in 70 minutes at a high temperature of 56. In conclusion, the activity of ASFV decreases with increasing temperature.
Today's Chinese food made pork patties, in the afternoon did a positive test, with disinfectant can be sanitized can not It is recommended that you go to the hospital immediately.
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African swine fever virus is an important member of the African swine fever family African swine fever virus genus, and some of the characteristics of the virus are similar to those of the Iridus viridae and poxviridae. The virion has a diameter of 175 215 nanometers, is 20hedral symmetrical, and has an envelope. The genome is double-stranded linear DNA, 170 190 kb in size.
In pigs, ASFV replicates in several types of cytoplasm, especially in reticuloendothelial cells and monocytes. The virus can multiply in the blunt-edged tick and make it a major vector of transmission.
The virus can be confirmed from the blood, tissue fluid, internal organs, and other excreta of infected pigs, and the virus in the blood can survive for six years in the blood in the low-temperature darkroom, and can live for several weeks at room temperature, and the virus will be destroyed by heating the virus-infected blood for 55 30 minutes or 60 10 minutes, and many lipid solvents and disinfectants can destroy it.
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