Titers of serum HI antibodies are presented as geometric mean titers (GMTs). The 2 influenza strains assessed were A/Vietnam/1194/04 (A/VIET) and A/Indonesia/05/2005 (A/INDO). The cut-off of the assay was the seropositivity cut-off value of 1:10.

A seroconverted subject was a subject with a pre-vaccination serum haemagglutination-inhibition (HI) antibody titer below (\<) 1:10 and a post-vaccination HI antibody titer above than or equal to (≥)1:40 or a pre-vaccination HI antibody titer ≥ 1:10 and at least four-fold increase in post-vaccination HI antibody titer. The 2 strains assessed were A/Vietnam/1194/04 (A/VIET) and A/Indonesia/05/2005 (A/INDO).

The seroconversion factor (SCF) was defined as the fold increase in serum Hemagglutination Inhibition (HI) geometric mean titers (GMTs) post vaccination compared to Day 0. The 2 strains assessed were A/Vietnam/1194/04 (A/VIET) and A/Indonesia/05/2005 (A/INDO).

A seroprotected subject was defined as a vaccinated subject with a haemagglutination-inhibition (HI) antibody titer above or equal to the seroprotection threshold of 1:40. The 2 influenza strains assessed were A/Vietnam/1194/04 (A/VIET) and A/Indonesia/5/2005 (A/INDO).

Assessed solicited local symptoms were ecchymosis, induration, pain, redness and swelling at the injection site. Any = occurrence of a symptom regardless of intensity. Grade 3 pain = significant pain at rest/ that prevented normal activities. Grade 3 ecchymosis/induration/redness/swelling = ecchymosis/induration/redness/swelling larger than (\>) 100 millimeters (mm). All solicited local symptoms were considered to be related to study vaccination. This outcome presents results from subjects participating in Phase A of the study.

Assessed solicited general symptoms were drowsiness, fever (axillary temperature above or equal (≥) 37.5°C), irritability, loss of appetite, shivering, sweating and vomiting. Any = occurrence of a symptom regardless of intensity or relationship to vaccination. Grade 3 = general symptom that prevented normal activity. Grade 3 temperature = axillary temperature \> 39.0°C. Related = symptom assessed as causally related to study vaccination. This outcome presents results for subjects aged between 3 and 5 years participating in Phases A, B and C of the study.

Serious adverse events (SAEs) assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization, result in disability/incapacity or are a congenital anomaly/birth defect in the offspring of a study subject. Any SAE = any SAE regardless of intensity or relationship to vaccination.

An unsolicited adverse event is any adverse event (i.e. any untoward medical occurrence in a patient or clinical investigation subject, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product) reported in addition to those solicited during the clinical study. Also any "solicited" symptom with onset outside the specified period of follow-up for solicited symptoms will be reported as an unsolicited adverse event. Grade 3 AE = AE that prevented normal activity, everyday activities, or required intervention of a physician/healthcare provider. Related = symptom assessed as causally related to study vaccination.

Changes from baseline are categorised as below, within(normal), or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for ALT for subjects participating in Phase A of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for AST for subjects participating in Phase A of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for BUN for subjects participating in Phase A of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for CPK for subjects participating in Phase A of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for CREA for subjects participating in Phase A of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for LDH for subjects participating in Phase A of the study

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for ALT for subjects participating in Phase B of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for AST for subjects participating in Phase B of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for BUN for subjects participating in Phase B of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for CPK for subjects participating in Phase B of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for CREA for subjects participating in Phase B of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for LDH for subjects participating in Phase B of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for ALT for subjects participating in Phase C of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for AST for subjects participating in Phase C of the study.

Changes from baseline are categorised as below, within(normal), or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for BUN for subjects participating in Phase C of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for CREA for subjects participating in Phase C of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for CPK for subjects participating in Phase C of the study.

Changes from baseline are categorised as below, within, or above the normal ranges at each scheduled post-vaccination time point versus the category of the laboratory values at baseline. Assessed parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK) Per parameter and range, it was assessed according to baseline values whether laboratory values of the subjects were below normal, normal or above the normal range. This outcome presents results for LDH for subjects participating in Phase C of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents ALT results for subjects participating in Phase A of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents AST results for subjects participating in Phase A of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents BUN results for subjects participating in Phase A of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents CREA results, for subjects participating in Phase A of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents CPK results for subjects participating in Phase A of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents LDH results for subjects participating in Phase A of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents AST results, for subjects participating to Phase B of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents AST results, for subjects participating to Phase B of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents CREA results, for subjects participating in Phase B of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents LDH results, for subjects participating to Phase B of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents BUN results, for subjects participating to Phase B of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents BUN results, for subjects participating to Phase C of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents ALT results, for subjects participating to Phase C of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents CPK results, for subjects participating to Phase B of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents AST results, for subjects participating to Phase C of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents CPK results, for subjects participating to Phase C of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents CREA results, for subjects participating to Phase C of the study.

Assessed biochemical parameters were alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CREA), blood urea nitrogen (BUN), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK). Per parameter , it was assessed whether subjects had laboratory values below normal, normal, or above normal range. This outcome presents LDH results, for subjects participating to Phase C of the study.