 |
 |
|
|
|
|
|
|
|
Communicable Disease: 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.
Health-teaching improves attendance by reducing illness. There are many occasions for teaching healthful living: a child returns after being quarantined with a communicable disease; another has had to have a tooth pulled; still another has brought an outstandingly good lunch. If their own experiences are thus pointed up, children learn, for example, how highly contagious colds are during their early stages and that a cold "which puts one person slightly under the weather can make another very ill." (79, p. 12,1950)
|
|
|
|
