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Israel
United States
Disease Outbreaks
Human Influenza
Military Personnel
Young Adult
H1N1 Subtype Influenza A Virus
Vaccination
Seroepidemiologic Studies
Public Health Practice
Primary Health Care
Risk Factors
Incidence
Seasons
Antibodies, Viral
Influenza Vaccines
Smallpox Vaccine
Attitude of Health Personnel
Disaster Planning
Terrorism
Co-Publications
29
19
16
8
7
6
5
4
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