JONAS E. SALK, M.D.; THOMAS FRANCIS JR., M.D.
Despite the fact that the greatest advances in knowledge of human influenza have been made since 1933, the name "influenza" invariably conjures up thoughts of 1918. Since the influenza viruses were not discovered1, 2, 3 until more than a decade later, there can be no certainty regarding the relationship between the viruses known today and the 1918 episode. Nevertheless, it seems probable that the influenza viruses will be found to be causally related to future recurrences of the highly fatal disease. In comparing the pandemic of 1918 with subsequent epidemics, Francis4 has remarked: "The differences enumerated appear to be those
SALK JE, FRANCIS T. IMMUNIZATION AGAINST INFLUENZA1. Ann Intern Med. ;25:443–452. doi: 10.7326/0003-4819-25-3-443
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Published: Ann Intern Med. 1946;25(3):443-452.
Infectious Disease, Prevention/Screening.
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