Does African swine fever cause low grade fever, and does African swine fever cause hypothermia?

African swine fever does not have a low-grade fever.

The pathogenesis of African swine fever is characterized by low spirit, decreased appetite, weak legs, inability to stand and walk, paralysis, rapid breathing, a surge in body temperature at the onset of the disease, and a decrease in body temperature in the later stage. So I personally think that a simple persistent low-grade fever cannot be judged as African swine fever.

Symptoms of African swine fever.

The incubation period of natural infection is 5 9 days, which is often shorter, and the clinical experimental infection is 2 5 days, and the body temperature rises to 41 at the onset of the disease, which lasts for about four days, until 48 hours before death, the body temperature begins to drop as its characteristic, and the clinical symptoms are not shown until the body temperature drops, so the symptoms are different from those of swine fever when the body temperature rises.

Fever for the first 3 to 4 days.

During this period, the pig has no appetite and shows extreme vulnerability, and the pig lies on the horn of the house, forced to get it to move, and shows extreme fatigue, especially in the hind limbs, rapid pulse, and coughing.

Rapid breathing is about one-third, showing dyspnea, serous or mucopurulent conjunctivitis.

Some strains can cause bloody diarrhea.

Vomiting, blood changes similar to swine fever, from 3 to 5 cases, showing 50% white blood cells.

The number of decreased phenomena of lymphocytes.

It is also reduced, and leukocytic anemia occurs when the body temperature rises.

The number of white blood cells does not decrease until the fourth day, and an increase in the number of immature neutrophils can also be observed, often death on the seventh day after fever, or symptoms appear only.

He died in a day or two.

African swine fever is an acute, febrile, highly contagious, and highly lethal infectious disease of pigs caused by African swine fever virus. The disease is characterized by high fever, cyanosis, and severe bleeding of internal organs. Its virulence is divided into three types: highly virulent strains, moderately virulent strains, and low-virulence strains.

Virulent strains can cause the most acute type (death from 1 to 3 days of infection) and the acute type (death from 6 to 15 days of infection). Moderately virulent strains can cause a subacute type (7-20 days of death) morbidity. Hypovirulence strains can cause chronic disease (death within 30 days of infection or longer).

The disease has a high fatality rate, and symptoms caused by virulent and moderately virulent strains are characterized by fever and reticuloendothelial hemorrhage; can cause abortion in pregnant sows; Causes fetal generalized edema, with blood spots on the placenta, **, myocardium, or liver.

1. Epidemiology.

Infection. Blood, tissue, secretions, and excreta (sick and dead animals) are sources of ASF infection. Wild boars, warthogs, and soft ticks are natural and storage hosts for ASF virus. The incubation period of the disease is 4-15 days.

Mode of transmission. The disease is mainly transmitted through direct contact, through the mouth and nose of infected pig excreta, or through ingestion of food containing the virus or other contaminants (e.g., water, waste, pig carcasses, etc.), or through indirect contact with contaminants or by soft tick bites. Pigs of all breeds, ages and sexes were infected.

2. Clinical symptoms.

The most acute type. Onset is characterized by high fever (41, 42), anorexia, reluctance to move, and shortness of breath. Pigs may die suddenly within 3 days of onset, or without any clinical symptoms. Morbidity and mortality in the most acute form can reach 100%.

Acute type. Sick pigs showed fever (40 42), loss of appetite, anorexia, lethargy and weakness, curled up, increased respiratory rate, and dyspnea; The ears, chest, abdomen, hind legs, perineum, tail, buttocks, etc. ** are congested, turning red or blue, and bruising patches and hemorrhagic spots appear (hemorrhagic spots are punctate or flaky); purulent discharge from the eyes and nose, or blood foam from the nose and mouth; Some develop constipation, the surface of the stool is covered with blood and mucus, others have diarrhea, the stool is mucus or blood (melena), and the area around the tail is contaminated with bloody stool. Pregnant sows may have abortion at all stages of gestation, and the aborted fetus is edema.

The pig died within 15 days of the onset of the disease. redness of the ears, nose, lips and legs of the diseased piglets; Ataxia or gait rigidity, neurological symptoms, and death within hours. Acute morbidity and mortality can reach 100%.

The body temperature of pigs with African swine fever will rise to about 41 for about 4 days, until the body temperature begins to drop 48 hours before death, and the clinical signs will not appear until the body temperature drops. During the fever period of the third to fourth day of the first month, the pulse beats rapidly, coughs, breathes about one-third faster, and it is difficult to breathe.

The incubation period is 5-9 days, and death occurs on the seventh day after the onset of the disease, or symptoms appear only.

He died in a day or two.

The clinical experimental infection is 2 5 days, the body temperature rises to 41 at the onset, which lasts for about four days, until 48 hours before death, the body temperature begins to drop as its characteristic, and the clinical symptoms are not shown until the body temperature drops, so it is different from the symptoms of swine fever when the body temperature rises, and the fever period is the first three to four days.

Pigs have no appetite, showing extreme vulnerability, pigs only lie in the corners, forced to drive it around, it shows extreme tiredness, especially the hind limbs, rapid pulse, coughing, breathing fast about one-third, dyspnea, serous or mucopurulent conjunctivitis, some strains can cause bloody diarrhea, vomiting, blood changes like swine fever, from three to five cases, showing a 50% reduction in the number of white blood cells, lymphocytes are also reduced, leukocyte anemia occurs when the body temperature rises, The number of white blood cells does not decrease until the fourth day, and an increase in the number of immature neutrophils can also be observed, often death on the seventh day after fever, or symptoms appear only.

African swine fever virus can survive in blood in a low-temperature dark chamber for about 6 years, in frozen meat for about 3 years, and at room temperature for several weeks; However, African swine fever is not resistant to high temperatures and is sensitive to strong acids and alkalis.

No, the root cause of African swine fever is that dead people or dead pigs are infected with the virus, and then they get sick and have a fever and the temperature rises, and finally they die.

This kind of African low temperature is indeed due to the long-term low temperature of pigs, which is also caused by a virus, and eventually pigs will also die in a large area.

This also shows that the virus is more conducive to survival at low temperatures. The picture below shows the swine fever virus in different pork. If not effectively controlled, the mortality rate can reach 100%.

In the first 3-4 days of African swine fever, pigs have no appetite, show extreme fragility, lie in the corner, and force it to move around, it shows extreme fatigue, rapid pulse, cough, rapid breathing about one-third and difficulty breathing, serous or mucopurulent conjunctivitis, some strains can cause bloody diarrhea, vomiting, etc.

It is characterized by a short course of onset, the most acute and acute mortality rate of up to 100%, the clinical manifestations are fever (up to 40 42), rapid heartbeat, dyspnea, partial cough, serous or mucopurulent discharge in the eyes and nose, cyanosis, obvious bleeding in lymph nodes, kidneys, gastrointestinal mucosa, and the clinical symptoms of African swine fever are similar to those of swine fever, which can only be confirmed by laboratory monitoring.

How long does it take for non-distemper virus to die naturally 1. African swine fever virus can survive in blood in a low-temperature dark room for about 6 years, in frozen meat for about 3 years, and at room temperature for several weeks; However, African swine fever is not resistant to high temperatures and is sensitive to strong acids and alkalis. 2. African swine fever virus can only survive for about 30 minutes in an environment of 60; In an environment of 85, it can only survive for about 10 minutes; In an environment of 100, it can only survive for a few seconds. 3. The appropriate pH of African swine fever virus

How long after African swine fever can be rehabilitated 1. After the pig farm is disinfected and cleared, if there are no new cases of African swine fever in the whole area within 3-6 months, you can consider starting rehabilitation. 2. Before rehabilitation, sentinel pigs can be introduced for observation. That is, collect saliva, blood, feces and other samples of sentinel pigs every week for testing, if within 40-50 days, the existence of African swine fever virus is not detected, you can start large-scale rehabilitation.

African Swine Fever Symptoms:

The incubation period of natural infection is 5 9 days, often shorter, and the clinical experiment infection is 2 5 days, the body temperature rises to 41 at the onset, which lasts for about four days, until 48 hours before death, the body temperature begins to drop as its characteristic, and the clinical symptoms are not shown until the body temperature drops, so the symptoms are different from the symptoms when the body temperature of swine fever rises, during the first three to four days of fever, the appetite of the pig shows extreme vulnerability, the pig lies in the corner of the house, forced to get up to get it to move, it shows extreme fatigue and weakness, especially the hind limbs, fast pulse, cough, Breathing fast about one-third, showing dyspnea, serous or mucopurulent conjunctivitis, some strains can cause bloody diarrhea, vomiting, blood changes like swine fever, from three to five cases, showing a 50% decrease in the number of white blood cells, lymphocytes are also reduced, leukocyte anemia occurs when the body temperature rises, and the number of white blood cells drops to 40% on the fourth day before it does not decrease, and the increase in the number of immature neutrophils can also be observed, often death on the seventh day after fever, or symptoms appear only.

He died in a day or two.

The incubation period for natural infection is 5 9 days, often shorter, and for clinical experimental infection, it is 2 5 days, and the body temperature rises to 41 at onsetIt lasts for about four days, until forty-eight hours before death, the body temperature begins to drop as its characteristic, and the clinical symptoms are not shown until the body temperature drops, so the symptoms are different from the symptoms of swine fever when the body temperature rises, the first three to four days of fever, the pig has no appetite, showing extreme vulnerability, the pig only lies in the corner, forced to get up to move around, it shows extreme fatigue, especially the hind limbs, rapid pulse, cough, rapid breathing about one-third, dyspnea, serous or mucopurulent conjunctivitis, some strains can cause bloody diarrhea, Vomiting, blood changes like swine fever.

I felt no symptoms, I was not in good spirits and did not eat, and I died in a few days, and I tested positive. I didn't have a fever, and my spleen wasn't swollen much.

African swine fever is very concerned, and many friends are particularly distressed because of the problem of swine fever. Because the drug has not been developed, everyone is in a hurry. So how many days does African swine fever die? Let's take a look!

1. African swine fever died in a few days

ASF often dies within seven days after the onset of fever symptoms. Different problem diggers should be treated differently, and the incidence probability of each pig is different, and the symptoms are also different.

2. Symptoms of African swine fever

1. The incubation period of natural infection is 5 9 days, which is often shorter, and the incubation period of clinical experimental infection is 2 5 days, and the body temperature rises to 41 at the onset of the disease, which lasts for about four days, until 48 hours before death, and the body temperature begins to drop as its characteristics.

2. At the same time, the clinical symptoms are not shown until the body temperature drops, so the symptoms are different from the symptoms when the body temperature of swine fever rises, during the first three to four days of fever, the pig has no appetite, showing extreme vulnerability, the pig is lying in the corner, forced to drive it to move, it shows extreme fatigue, especially the hind limbs, fast pulse, coughing, rapid breathing about one-third, dyspnea, serous or mucopurulent conjunctivitis.

3. Some strains of stool potatoes can cause bloody diarrhea, vomiting, blood changes like swine fever, from three to five cases, showing a 50% decrease in the number of white blood cells, lymphocytes are also reduced, leukocyte anemia occurs when the body temperature rises, and the number of white blood cells drops to 40% on the fourth day before it does not decline, and the increase in the number of rough and immature neutral globules can also be observed, often death on the seventh day after fever, or symptoms appear only.

He died in a day or two.