Symptoms, prevention and treatment of swine meningitis B. Swine meningitis B is a sudden disease, with a mortality rate of more than 70% among pigs. The incidence pattern and prevention and control measures are now introduced as follows: 1. Incidence pattern Porcine B meningitis occurs all year round, and is more common in small and medium-sized pigs weighing less than 50 kilograms within three months; in terms of seasons, it occurs in spring and autumn. The incidence is more serious in the two seasons. 2. Diagnosis and treatment of meningitis B. Porcine meningitis B can be divided into three types based on pathology and clinical manifestations: acute meningitis, subacute meningitis, and chronic meningitis. 1． Clinical manifestations of acute meningitis: Pigs suddenly scream strangely, go crazy, have bulging blood vessels in their ears, have dull, dark blue eyes, and act frantically and erratically. They usually die within a few minutes to an hour. Treatment measures: For this disease, the fastest method is to perform bloodletting from the ear incision to reduce the internal pressure of the blood vessels in the brain tissue. The method is to grasp the front hoof of the affected pig tightly and fix it from the neck (do not lift it from the ear), and then use scissors to cut a 30 cm long mouth at the tip of the ear longitudinally to bleed. After bleeding from the incision, 4.8 million units of penicillin, sulfadiazine (1 tube) and dexamethasone (1 tube) were intravenously injected into the ear blood vessel, and 2 epinephrine tubes were intravenously injected into the ear blood vessel on the other side. After the pig's spirit was slightly stable, the muscles were An injection of 1.6 million units of penicillin was administered. As long as the condition is under control, the diseased pig can be cured if the same method is used again after 4 hours. 2． Clinical manifestations of subacute meningitis: Pigs may run wildly and neigh, fall to the ground and convulse, or stand still. Each attack lasts about 2 to 5 minutes and foams at the mouth. The interval between repeated attacks is 10 to 30 minutes. Treatment measures: Intravenous injection of sulfadiazine (1 tube) into the ear blood vessel with dexamethasone (1 tube) diluted with 4.8 million units of penicillin, intramuscular injection of antacid in the neck, and intramuscular injection of Furamidine at points to enhance metabolism and prevent hydrocephalus. . Under normal circumstances, the disease can be cured after 3 treatments. 3． Clinical manifestations of chronic meningitis: The sick pig falls to the ground, goes crazy, neighs, is accompanied by coughing, diarrhea, and asthma. The attacks occur 3 to 5 times a day and last for a short period of time. Treatment measures: intramuscular injection of 10 ml of Viralin with 1.6 million units of penicillin; at the same time, intramuscular injection of 10 ml of sulfadiazine with 5 ml of dexamethasone, twice a day, and recovery can be achieved in 2 days. 3. Prevention of porcine B meningitis Porcine B meningitis has a high mortality rate and high treatment costs, so prevention is advocated. 1． Breeding pigs are vaccinated with attenuated meningitis B vaccine once two months before delivery. 2． Piglets should be vaccinated with attenuated meningitis B vaccine once 60 days after birth. See for details, see for details: /index.htm