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Influenza Vaccines
Attenuated Vaccines
Inactivated Vaccines
Antibodies, Viral
Human Influenza
Infants
Influenza B virus
H1N1 Subtype Influenza A Virus
H3N2 Subtype Influenza A Virus
Influenza A virus
Young Adult
Vaccination
Administration, Intranasal
Immunization Programs
Double-Blind Method
United States
Prospective Studies
Randomized Controlled Trials
Time Factors
Placebos
Co-Publications
10
6
4
3
2
1
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