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The virus of psittacosis is present in the nasal secretions, feces, blood, spleen, and liver of an infected parrot. 2. Parrots are susceptible to intraoral, intranasal, or intramuscular inoculations of the virus. 3. The most constant pathological changes produced by psittacosis in parrots occur in the spleen and liver. The lesions exhibited in the latter organ consist of areas of necrotic liver cells and damage to bile ducts. In no instance, in our experience, were lesions observed in a parrot's lungs comparable to those found in the lungs of men. 4. "Minute bodies" similar to those described by Levinthal and others were found in many, but not in all of the infected birds. 5. Parrots that have recovered from one attack of psittacosis exhibit an active immunity against reinfection.

鹦鹉热病毒存在于感染鹦鹉的鼻腔分泌物、粪便、血液、脾脏和肝脏中。
鹦鹉易通过口腔内、鼻腔内或肌肉内接种该病毒而感染。
鹦鹉热在鹦鹉中产生的最常见的病理变化发生在脾脏和肝脏。后者器官中的病变包括坏死的肝细胞区域和胆管损伤。在我们的经验中，在鹦鹉的肺部从未观察到与在人类肺部中发现的病变相当的病变。
在许多受感染的鸟类中发现了类似于莱文索尔等人描述的“微小体”，但并非所有鸟类都有。
从一次鹦鹉热感染中恢复的鹦鹉表现出对再次感染的主动免疫力。

The virus of psittacosis is present in the nasal secretions, feces, blood, spleen, and liver of an infected parrot. 2. Parrots are susceptible to intraoral, intranasal, or intramuscular inoculations of the virus. 3. The most constant pathological changes produced by psittacosis in parrots occur in the spleen and liver. The lesions exhibited in the latter organ consist of areas of necrotic liver cells and damage to bile ducts. In no instance, in our experience, were lesions observed in a parrot's lungs comparable to those found in the lungs of men. 4. "Minute bodies" similar to those described by Levinthal and others were found in many, but not in all of the infected birds. 5. Parrots that have recovered from one attack of psittacosis exhibit an active immunity against reinfection.

鹦鹉热病毒存在于感染鹦鹉的鼻腔分泌物、粪便、血液、脾脏和肝脏中。
鹦鹉易通过口腔内、鼻腔内或肌肉内接种该病毒而感染。
鹦鹉热在鹦鹉中产生的最常见的病理变化发生在脾脏和肝脏。后者器官中的病变包括坏死的肝细胞区域和胆管损伤。在我们的经验中，在鹦鹉的肺部从未观察到与在人类肺部中发现的病变相当的病变。
在许多受感染的鸟类中发现了类似于莱文索尔等人描述的“微小体”，但并非所有鸟类都有。
从一次鹦鹉热感染中恢复的鹦鹉表现出对再次感染的主动免疫力。

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