HOME REMEDIES FOR COMMON DISEASES 753 



fection may occur at any period of the disease, and 

 the disease may be communicated by contaminated 

 clothing or any other objects, for several months after 

 exposure. 



Measles.— The incubation period of this disease 

 varies from four to sixteen days. The danger of con- 

 tagion exists during the whole course of the disease, 

 but disappears very rapidly after convalescence. Dan- 

 ger of transmission of the disease through the clothing 

 probably exists only a short time after contagion. 



Rotheln (Rubella) .—The incubation period of this 

 disease is very variable, the average being about eight- 

 een days. The contagion is most active just before 

 the appearance of the eruption, and during its devel- 

 opment. The contagion period continues for a short 

 time after the eruption is fully developed. 



Mumps.— The incubation period is the same as that 

 for rotheln. Contagion is greatest during the first 

 three or four days. 



Smallpox.-The average incubation period is 

 twelve days; the minimum, nine days; the maximum, 

 fifteen days. Contagion may occur at any period of 

 the disease. Infection may occur through personal 

 contact or through the clothing. 



Chickenpox.— The incubation period is fourteen to 

 twenty days. It is less contagious than smallpox, and 

 is greatest during the period of eruption. 



Scarlet Fever.— The incubation period is very short, 

 rarely reaching six days. The contagious elements 

 persist a long time after recovery, lasting three months 

 at least. 



Typhoid Fever.— The average period of incubation 

 is twelve to fourteen days ; sometimes nine days ; occa- 

 sionally twenty-four days. Contagion may occur at 



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