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Smallpox Vaccination in Infancy
As a result of studies by the investigating commission, to which reference was made previously (The Journal, July 26, p. 280), the public health service sent a circular letter to all physicians of the Netherlands, calling attention to the advantages of smallpox vaccination during the first year of life. Statistics have shown that, during the first twelve months of life, postvaccinal encephalitis develops much less frequently. Furthermore, the local accidents of vaccination are much less when vaccination is applied during the first year of life. The periods most favorable for vaccination are May and December. Children who have not fully recovered from an infectious disease, and likewise children who are living in an environment in which infectious diseases have recently occurred, should not be vaccinated as yet. The circular letter concludes with an appeal to the physicians of the Netherlands that they adopt this method, as
NETHERLANDS. JAMA. 1930;95(19):1441-1442. doi:10.1001/jama.1930.02720190053022