Diplococcus pneumoniae sickness is one kind which causes by the diplococcus pneumoniae acute, the highly lethal infectious disease. Is being near examines, assumes the marble type by the lungs to become the chief feature. This sickness's dissemination way is sickness dog and the healthy dog immediate contact. In each time explodes popularly, has not seen the humanity and other animal morbidity, the pattern of infection is narrow. Looking from the morbidity age, not the reach 1 year old of dog and the youth dog disease incidence rate is high: The former occupies 28%(30/107), the latter (1~3 years old) account for 60%(64yi107 ),4 above the year old the dog to occupy 12%(13/107). This sickness has the extremely high case fatality rate, gets sick without treatment 101 the dog, dies 98, the case fatality rate reaches as high as 97% .

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Symptom: the this sickness clinical type mainly has the following two kinds.

1 most acute: Sickness dog take scant of breath as a characteristic, is more than in 1~2nd to die.

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2 acute: At the beginning of sickness, sickness dog hits chokes, the spirit sinks strongly fragrant, anorexia, body temperature 38.5~39.6¡æ. The nose class coherent secretion, bursts into tears, the gum in the eyes increases. Along with the course development, sickness dog scant of breath, the four limbs lie prone start, the body unbends, the head lifts, resembles the wooden horse, assumes the chest abdominal breathing, the dog body along with breathes around the movement to sway, sends the respite sound , outside several meters may hear, breath number each minute 30~40 times, the nose oozes pus the genital products, the gum in the eyes cover eyelid. The sound of the heart is weaken, the palpitation speeds up. Sickness dog walks incapable, the hind legs swing, lies happily, the fear is cold. this sees in 1 year-old above grown-up dog, often dies in 3~7th.