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Problems Of Disease That: Mycoplasmosis is a respiratory disease caused y the bacteria Mycoplasma gallisepticum. It is Iso known as air sac disease or chronic respira-jry disease. Those affected with the disease may how nasal discharge, watery eyes, and respira-)ry difficulty. This disease is often associated /ith other respiratory diseases. It is transmitted hiefly from infected hens to their chicks through le eggs. The disease can also be transmitted by ontact with infected individuals, but it spreads ery slowly in this manner. The disease can best e controlled by maintaining breeding flocks free f the disease by strict measures of isolation and mitation. Chicks hatched from such flocks can egin life free of the disease.
Marek's disease is primarily a disease of young chickens from 2 to 5 months of age. It is also known as jowl paralysis and neural lym-phomatosis. Nerve-tissue rumors that cause paralysis of both legs and wings are the most common form of this disease, but the tumors may also affect the viscera, eyes, and gonads. The disease is probably caused by a virus.
Among the unsolved and worsening problems of disease that in the U.S. was the new outbreak of venereal disease, particularly gonorrhea, which was reported to have increased 8% from 1965 to 1966. Some success in controlling the epidemic was reported from Pittsburgh, Pa., where a very active public education campaign was waged through all the communications media; for example, "syphilis is not a dirty word—it is a dangerous disease." There was now very little difficulty in curing syphilis and gonorrhea, but the high prevalence of venereal disease among teen-agers strongly suggested that ignorance was the main barrier to control. The obvious conclusion was that if parents were not able to provide sex education, they should see to it that the schools offered the protection of knowledge to their children.
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