CONTAGIOUS DISEASES 



375 



had entered the wound as a result of some one's carelessness, 

 either in the preparation of the vaccine, or in the care of 



PRUSSIA HOLLAND AUSTRIA 



With Compulsory Vaccination With Compulsory Without Compulsory 



and Compulsory Re-vacci- Vaccination of Children Vaccination, 



nation at the Age of 12. before entering a School. 



FIG. 150. Showing effect of compulsory vaccination on death rate from smallpox. 



the wound. Such extreme precautions are now observed that 

 the possibility of danger from this source is very small indeed. 

 It is doubtless true to-day that there is much less danger from 



