These pigs had acquired lungworm infestations presumably containing masked influenza virus under natural conditions.

这些猪在自然件已受到含有隐蔽流感病毒的肺丝虫生。

Disease caused by infestation of tissue with filariae.

肠内感染由于变形虫所引起。

The arrival of warm weather raises the specter of disease and increased rat infestations caused by rotting garbage.

天气人们担心垃圾腐烂会引起疾病传播和鼠群猖獗。

Conclusion The infestation ratio and the ectozoa index of these hosts were lower with the exception of hedgepig.

结论除刺猬外，各鼠种染虫率和染虫指数较低。

There are lots of factors causing infestation of phytophagous pests and changes of dominate species in the apple orchards.

摘要苹果园内植食性昆虫种群数量的上升和主要种类的变替，原因是多方面的。

As a rule the swine infested with the lungworms carrying the "masked virus" did not develop swine influenza immediately upon infestation with the lungworm.

通常，受到携带了“隐蔽病毒”的肺丝虫侵袭的猪，并不因肺丝虫的侵袭立即发生流感。

These pigs had acquired lungworm infestations presumably containing masked influenza virus under natural conditions.

这些然条件下已受到含有隐蔽流感病毒的肺丝虫生。

Disease caused by infestation of tissue with filariae.

肠内感染由于变形虫所引起。

The arrival of warm weather raises the specter of disease and increased rat infestations caused by rotting garbage.

天气转暖使人垃圾腐烂会引起疾病传播和鼠群猖獗。

Conclusion The infestation ratio and the ectozoa index of these hosts were lower with the exception of hedgepig.

结论除刺猬外，各鼠种染虫率和染虫指数较低。

There are lots of factors causing infestation of phytophagous pests and changes of dominate species in the apple orchards.

摘要苹果园内植食性昆虫种群数量的上升和主要种类的变替，原因是多方面的。

As a rule the swine infested with the lungworms carrying the "masked virus" did not develop swine influenza immediately upon infestation with the lungworm.

通常，受到携带了“隐蔽病毒”的肺丝虫侵袭的，并不因肺丝虫的侵袭立即发生流感。

These pigs had acquired lungworm infestations presumably containing masked influenza virus under natural conditions.

这些猪在自然条件下已受到含有隐蔽流感病毒的肺丝虫生。

Disease caused by infestation of tissue with filariae.

肠内感染由于变形虫所引起。

The arrival of warm weather raises the specter of disease and increased rat infestations caused by rotting garbage.

天气转暖使人们担心垃圾腐烂会引起疾病传播和鼠群猖獗。

Conclusion The infestation ratio and the ectozoa index of these hosts were lower with the exception of hedgepig.

结论除刺猬外，各鼠种染虫率和染虫指数较低。

There are lots of factors causing infestation of phytophagous pests and changes of dominate species in the apple orchards.

摘要苹果园内植食性昆虫种群数量的上升和主要种类的变替，原方面的。

As a rule the swine infested with the lungworms carrying the "masked virus" did not develop swine influenza immediately upon infestation with the lungworm.

通常，受到携带了“隐蔽病毒”的肺丝虫侵袭的猪，并不肺丝虫的侵袭立即发生流感。

These pigs had acquired lungworm infestations presumably containing masked influenza virus under natural conditions.

这些猪在自然条件下已受到含有隐蔽流感病毒的肺丝虫生。

Disease caused by infestation of tissue with filariae.

肠内感染由于变形虫所引起。

The arrival of warm weather raises the specter of disease and increased rat infestations caused by rotting garbage.

天气转暖使人们担心垃圾腐烂会引起疾病传播和鼠群猖獗。

Conclusion The infestation ratio and the ectozoa index of these hosts were lower with the exception of hedgepig.

结论除刺猬外，各鼠种染虫率和染虫指数较低。

There are lots of factors causing infestation of phytophagous pests and changes of dominate species in the apple orchards.

果园内植食性昆虫种群数量的上升和主种类的变替，原因是多方面的。

As a rule the swine infested with the lungworms carrying the "masked virus" did not develop swine influenza immediately upon infestation with the lungworm.

通常，受到携带了“隐蔽病毒”的肺丝虫侵袭的猪，并不因肺丝虫的侵袭立即发生流感。

These pigs had acquired lungworm infestations presumably containing masked influenza virus under natural conditions.

这些猪在自然条件下已受到含有感病毒的肺丝生。

Disease caused by infestation of tissue with filariae.

肠内感染由于所引起。

The arrival of warm weather raises the specter of disease and increased rat infestations caused by rotting garbage.

天气转暖使人们担心垃圾腐烂会引起疾病传播和鼠群猖獗。

Conclusion The infestation ratio and the ectozoa index of these hosts were lower with the exception of hedgepig.

结论除刺猬外，各鼠种染率和染指数较低。

There are lots of factors causing infestation of phytophagous pests and changes of dominate species in the apple orchards.

摘要苹果园内植食性昆种群数量的上升和主要种类的替，原因是多方面的。

As a rule the swine infested with the lungworms carrying the "masked virus" did not develop swine influenza immediately upon infestation with the lungworm.

通常，受到携带了“病毒”的肺丝侵袭的猪，并不因肺丝的侵袭立即发生感。

These pigs had acquired lungworm infestations presumably containing masked influenza virus under natural conditions.

这些猪在自然条件下已受到含有隐蔽流感病毒的肺丝生。

Disease caused by infestation of tissue with filariae.

肠内感染由于变形所引起。

The arrival of warm weather raises the specter of disease and increased rat infestations caused by rotting garbage.

天气转暖使人们担心垃圾腐烂会引起疾病传播和鼠猖獗。

Conclusion The infestation ratio and the ectozoa index of these hosts were lower with the exception of hedgepig.

结论除刺猬外，各鼠染率和染指数较低。

There are lots of factors causing infestation of phytophagous pests and changes of dominate species in the apple orchards.

摘要苹果园内植食性昆数量的上升和主要类的变替，原因是多方面的。

As a rule the swine infested with the lungworms carrying the "masked virus" did not develop swine influenza immediately upon infestation with the lungworm.

通常，受到携带了“隐蔽病毒”的肺丝侵袭的猪，并不因肺丝的侵袭立即发生流感。

These pigs had acquired lungworm infestations presumably containing masked influenza virus under natural conditions.

这些猪在自然条件下已受到含有隐蔽流感病毒的肺丝虫生。

Disease caused by infestation of tissue with filariae.

肠内感由于变形虫所引起。

The arrival of warm weather raises the specter of disease and increased rat infestations caused by rotting garbage.

天气转暖使人们担心垃圾腐烂会引起疾病传播和群猖獗。

Conclusion The infestation ratio and the ectozoa index of these hosts were lower with the exception of hedgepig.

结论除刺猬外，各虫率和虫指数较低。

There are lots of factors causing infestation of phytophagous pests and changes of dominate species in the apple orchards.

摘要苹果园内植食性昆虫群数量的上升和主要的变替，原因是多方面的。

As a rule the swine infested with the lungworms carrying the "masked virus" did not develop swine influenza immediately upon infestation with the lungworm.

通常，受到携带了“隐蔽病毒”的肺丝虫侵袭的猪，并不因肺丝虫的侵袭立即发生流感。

These pigs had acquired lungworm infestations presumably containing masked influenza virus under natural conditions.

这些猪在自然条件下已受到含有隐蔽流病丝虫生。

Disease caused by infestation of tissue with filariae.

肠由于变形虫所引起。

The arrival of warm weather raises the specter of disease and increased rat infestations caused by rotting garbage.

天气转暖使人们担心垃圾腐烂会引起疾病传播和鼠群猖獗。

Conclusion The infestation ratio and the ectozoa index of these hosts were lower with the exception of hedgepig.

结论除刺猬外，各鼠种虫率和虫指数较低。

There are lots of factors causing infestation of phytophagous pests and changes of dominate species in the apple orchards.

摘要苹果园植食性昆虫种群数量上升和主要种类变替，原因是多方面。

As a rule the swine infested with the lungworms carrying the "masked virus" did not develop swine influenza immediately upon infestation with the lungworm.

通常，受到携带了“隐蔽病”丝虫侵袭猪，并不因丝虫侵袭立即发生流。

These pigs had acquired lungworm infestations presumably containing masked influenza virus under natural conditions.

这些猪在自然条件下已受到含有隐蔽流感病毒的肺丝生。

Disease caused by infestation of tissue with filariae.

肠内感染由于变形所引起。

The arrival of warm weather raises the specter of disease and increased rat infestations caused by rotting garbage.

天气转暖使人们担心垃圾腐烂会引起疾病传播和鼠群猖獗。

Conclusion The infestation ratio and the ectozoa index of these hosts were lower with the exception of hedgepig.

结猬外，各鼠种染率和染指数较低。

There are lots of factors causing infestation of phytophagous pests and changes of dominate species in the apple orchards.

摘要苹果园内植食性种群数量的上升和主要种类的变替，原因是多方面的。

As a rule the swine infested with the lungworms carrying the "masked virus" did not develop swine influenza immediately upon infestation with the lungworm.

通常，受到携带了“隐蔽病毒”的肺丝侵袭的猪，并不因肺丝的侵袭立即发生流感。