A comparison of subcutaneous, nasal, and combined influenza vaccination. II. Protection against natural challenge.

Absenteeism Aerosols Age Factors Aged Antibodies/analysis Antibody Formation Complement Fixation Tests Hemagglutination Inhibition Tests Humans Influenza Vaccines/administration & dosage Influenza, Human/diagnosis,epidemiology,immunology,prevention & control Injections, Subcutaneous Neutralization Tests Nose Population Surveillance United States Vaccination

Aerosols Antibodies Influenza Vaccines