Protectivity and Safety of Quadrivalent Influenza HA Vaccine in Indonesian Population

Inclusion Criteria for Subjects 9 - 40 Years of Age: * Healthy * Properly informed about the study and having signed the informed consent form * Subject/Parent will commit themselves to comply with the instructions of the investigator and the schedule of the trial. Inclusion Criteria for Subjects 6 Months - 8 Years of Age: * Healthy * Parents have been informed properly regarding the study and signed the informed consent form * Parents will commit themselves to comply with the instructions of the investigator and the schedule of the trial Exclusion Criteria: * Subject concomitantly enrolled or scheduled to be enrolled in another trial * Evolving mild, moderate or severe illness, especially infectious diseases or fever (axillary temperature \>= 37.5 C ) * Known history of allergy to egg and or chicken protein or any component of the vaccines * History of uncontrolled coagulopathy or blood disorders contraindicating intramuscular injection * Subject who has received in the previous 4 weeks a treatment likely to alter the immune response (intravenous immunoglobulins, blood-derived products or long term corticotherapy (\> 2 weeks). * Pregnancy \& Lactation (Adult) * Any abnormality or chronic disease which according to the investigator might interfere with the assessment of the trial objectives * Subject already immunized with influenza vaccine within 1 year. * Subjects receive any vaccination within 1 month before and after immunization of Quadrivalent Influenza Vaccine.