Infanrix Hexa

Infanrix Hexa

Manufacturer:

GlaxoSmithKline

Distributor:

Zuellig
Full Prescribing Info
Contents
Combined diphtheria-tetanus-acellular pertussis, hepatitis B virus, enhanced inactivated polio vaccine and Haemophilus influenzae type b vaccine.
Description
After reconstitution, 1 dose (0.5 ml) contains: Diphtheria toxoid1 not less than 30 International Units (IU).
Tetanus toxoid1 not less than 40 International Units (IU).
Bordetella pertussis antigens: Pertussis toxoid (PT)1 25 micrograms; Filamentous Haemagglutinin (FHA)1 25 micrograms; Pertactin (PRN)1 8 micrograms.
Hepatitis B surface antigen (HBs)2,3 10 micrograms.
Poliovirus (inactivated) (IPV): type 1 (Mahoney strain)4 40 D-antigen unit; type 2 (MEF-1 strain)4 8 D-antigen unit; type 3 (Saukett strain)4 32 D-antigen unit.
Haemophilus influenzae type b polysaccharide (polyribosylribitol phosphate, PRP)3 10 micrograms conjugated to tetanus toxoid as carrier protein approximately 25 micrograms.
1adsorbed on aluminium hydroxide, hydrated (Al(OH)3) 0.5 milligrams Al3+.
2produced in yeast cells (Saccharomyces cerevisiae) by recombinant DNA technology.
3adsorbed on aluminium phosphate (AlPO4) 0.32 milligrams Al3+.
4propagated in VERO cells.
The vaccine may contain traces of formaldehyde, neomycin and polymyxin which are used during the manufacturing process (see Contraindications).
Excipients/Inactive Ingredients: Hib powder: Lactose anhydrous.
DTPa-HBV-IPV suspension: Sodium chloride (NaCl); Medium 199 containing principally amino acids, mineral salts, vitamins; Water for injections.
Action
Pharmaco-therapeutic group: Bacterial and viral vaccines combined. ATC code: J07CA09.
Pharmacology: Pharmacodynamics: Immunogenicity: The immunogenicity of Infanrix hexa has been evaluated in clinical studies from 6 weeks of age. The vaccine was assessed in 2-dose and 3-dose priming schedules, including the schedule for the Expanded Program on Immunisation, and as a booster dose. The results of these clinical studies are summarised in the tables as follows.
After a 3-dose primary vaccination schedule, at least 95.7% of infants had developed seroprotective or seropositive antibody levels against each of the vaccine antigens. After booster vaccination (post-dose 4), at least 98.4% of children had developed seroprotective or seropositive antibody levels against each of the vaccine antigens. (See Table 1.)

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After a 2-dose primary vaccination schedule, at least 84.3% of infants had developed seroprotective or seropositive antibody levels against each of the vaccine antigens. After a complete vaccination according to a 2-dose primary and booster schedule with Infanrix hexa, at least 97.9% of the subjects had developed seroprotective or seropositive antibody levels against each of the vaccine antigens.
According to different studies, immune response to the PRP antigen of Infanrix hexa after 2 doses given at 2 and 4 months of age will vary if co-administered with a tetanus toxoid conjugate vaccine. Infanrix hexa will confer an anti-PRP immune response (cut-off ≥ 0.15μg/ml) in at least 84% of the infants. This rises to 88% in case of concomitant use of pneumococcal vaccine containing tetanus toxoid as carrier and to 98% when Infanrix hexa is co-administered with a TT conjugated meningococcal vaccine (see Interactions). (See Table 2.)

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Serological correlates of protection have been established for diphtheria, tetanus, polio, Hepatitis B and Hib. For pertussis there is no serological correlate of protection. However, as the immune response to pertussis antigens following Infanrix hexa administration is equivalent to that of Infanrix, the protective efficacy of the two vaccines is expected to be equivalent.
Efficacy in protecting against pertussis: The clinical protection of the pertussis component of Infanrix, against WHO-defined typical pertussis (≥ 21 days of paroxysmal cough) was demonstrated after 3-dose primary immunisation in the studies tabulated as follows: (See Table 3.)

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Persistence of the immune response: The persistence of the immune response to a 3-dose primary (at 2-3-4, 3-4-5 or 2-4-6 months of age) and booster (in the second year of life) schedule with Infanrix hexa was evaluated in children 4-8 years of age. Protective immunity against the three poliovirus types and PRP was observed in at least 91.0% of children and against diphtheria and tetanus in at least 64.7% of children. At least 25.4% (anti-PT), 97.5% (anti-FHA) and 87.0% (anti-PRN) of children were seropositive against the pertussis components. (See Table 4.)

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With regards to hepatitis B, protective immunity (≥10 mIU/ml) following a 3-dose primary and booster schedule with Infanrix hexa has been shown to persist in ≥ 85% of subjects 4-5 years of age and in ≥72% of subjects 7-8 years of age. Additionally, following a 2-dose primary and booster schedule, protective immunity against hepatitis B persisted in ≥ 48% of subjects 11-12 years of age.
Hepatitis B immunological memory was confirmed in children 4 to 12 years of age. These children had received Infanrix hexa as primary and booster vaccination in infancy, and when an additional dose of monovalent HBV vaccine was administered, protective immunity was induced in at least 96.8% of subjects.
Immunogenicity in preterm infants: The immunogenicity of Infanrix hexa was evaluated across three studies including approximately 300 preterm infants (born after a gestation period of 24 to 36 weeks) following a 3-dose primary vaccination course at 2, 4 and 6 months of age. The immunogenicity of a booster dose at 18 to 24 months of age was evaluated in approximately 200 preterm infants.
One month after primary vaccination at least 98.7% of subjects were seroprotected against diphtheria, tetanus and poliovirus types 1 and 2; at least 90.9% had seroprotective antibody levels against the hepatitis B, PRP and poliovirus type 3 antigens; and all subjects were seropositive for antibodies against FHA and PRN while 94.9% were seropositive for anti-PT antibodies.
One month after the booster dose at least 98.4% of subjects had seroprotective or seropositive antibody levels against each of the antigens except against PT (at least 96.8%) and hepatitis B (at least 88.7%). The response to the booster dose in terms of fold increases in antibody concentrations (15- to 235-fold), indicate that preterm infants were adequately primed for all the antigens of Infanrix hexa.
In a follow-up study conducted in 74 children, approximately 2.5 to 3 years after the booster dose, 85.3% of the children were still seroprotected against hepatitis B and at least 95.7% were seroprotected against the three poliovirus types and PRP.
Post marketing experience: Results of long term follow-up in Sweden demonstrate that acellular pertussis vaccines are efficacious in infants when administered according to the 3 and 5 months primary vaccination schedule, with a booster dose administered at approximately 12 months. However, data indicate that protection against pertussis may be waning at 7-8 years of age with this 3-5-12 month's schedule. This suggests that a second booster dose of pertussis vaccine is warranted in children aged 5-7 years who have previously been vaccinated following this particular schedule.
The effectiveness of the Hib component of Infanrix hexa was investigated via an extensive post-marketing surveillance study conducted in Germany. Over a seven year follow-up period, the effectiveness of the Hib components of two hexavalent vaccines, of which one was Infanrix Hexa, was 89.6% for a full primary series and 100% for a full primary series plus booster dose (irrespective of the Hib vaccine used for priming).
Results of ongoing routine national surveillance in Italy demonstrate that Infanrix hexa is effective in controlling Hib disease in infants when the vaccine is administered according to the 3 and 5 months primary vaccination schedule, with a booster dose administered at approximately 11 months. Over a six year period starting in 2006, where Infanrix hexa was the principal Hib-containing vaccine in use with vaccination coverage exceeding 95%, Hib invasive disease continued to be well controlled, with four confirmed Hib cases reported in Italian children aged less than 5 years through passive surveillance.
Pharmacokinetics: Evaluation of pharmacokinetic properties is not required for vaccines.
Toxicology: Preclinical safety data: Non-clinical data reveal no special hazard for humans based on conventional studies of safety, specific toxicity, repeated dose toxicity and compatibility of ingredients.
Indications/Uses
Infanrix hexa is indicated for primary and booster vaccination of infants against diphtheria, tetanus, pertussis, hepatitis B, poliomyelitis and disease caused by Haemophilus influenzae type b.
Dosage/Direction for Use
Posology: The primary vaccination schedule consists of two or three doses (of 0.5 ml) which should be administered according to official recommendations (see the table as follows and Pharmacology: Pharmacodynamics under Actions for schedules evaluated in clinical trials).
Booster doses should be given in accordance with the official recommendations, but, as a minimum, a dose of Hib conjugate vaccine must be administered. Infanrix hexa can be considered for the booster if the antigen composition is in accordance with the official recommendations. (See Table 5.)

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The Expanded Program on Immunisation schedule (at 6, 10, 14 weeks of age) may only be used if a dose of hepatitis B vaccine has been given at birth.
Where a dose of hepatitis B vaccine is given at birth, Infanrix hexa can be used as a replacement for supplementary doses of hepatitis B vaccine from the age of six weeks. If a second dose of hepatitis B vaccine is required before this age, monovalent hepatitis B vaccine should be used.
Locally established immunoprophylactic measures against hepatitis B should be maintained.
Paediatric population: The safety and efficacy of Infanrix hexa in children over 36 months of age have not been established. No data are available.
Method of administration: Infanrix hexa is for deep intramuscular injection, preferably at alternating sites for subsequent injections.
For instructions on reconstitution of the medicinal product before administration, see Cautions for Usage.
Overdosage
No case of overdose has been reported.
Contraindications
Hypersensitivity to the active substances or to any of the excipients listed in Description, or formaldehyde, neomycin and polymyxin.
Hypersensitivity after previous administration of diphtheria, tetanus, pertussis, hepatitis B, polio or Hib vaccines.
Infanrix hexa is contraindicated if the infant has experienced an encephalopathy of unknown aetiology, occurring within 7 days following previous vaccination with pertussis containing vaccine. In these circumstances pertussis vaccination should be discontinued and the vaccination course should be continued with diphtheria-tetanus, hepatitis B, polio and Hib vaccines.
As with other vaccines, administration of Infanrix hexa should be postponed in subjects suffering from acute severe febrile illness. The presence of a minor infection is not a contraindication.
Special Precautions
Vaccination should be preceded by a review of the medical history (especially with regard to previous vaccination and possible occurrence of undesirable events) and a clinical examination.
As with any vaccine, a protective immune response may not be elicited in all vaccinees (see Pharmacology: Pharmacodynamics under Actions).
Infanrix hexa will not prevent disease caused by pathogens other than Corynebacterium diphtheriae, Clostridium tetani, Bordetella pertussis, hepatitis B virus, poliovirus or Haemophilus influenzae type b. However, it can be expected that hepatitis D will be prevented by immunisation as hepatitis D (caused by the delta agent) does not occur in the absence of hepatitis B infection.
If any of the following events are known to have occurred in temporal relation to receipt of pertussis-containing vaccine, the decision to give further doses of pertussis-containing vaccines should be carefully considered: Temperature of ≥ 40.0°C within 48 hours, not due to another identifiable cause; Collapse or shock-like state (hypotonic-hyporesponsive episode) within 48 hours of vaccination; Persistent, inconsolable crying lasting ≥ 3 hours, occurring within 48 hours of vaccination; Convulsions with or without fever, occurring within 3 days of vaccination.
There may be circumstances, such as a high incidence of pertussis, when the potential benefits outweigh possible risks.
As with all injectable vaccines, appropriate medical treatment and supervision should always be readily available in case of a rare anaphylactic event following the administration of the vaccine.
As for any vaccination, the risk-benefit of immunising with Infanrix hexa or deferring this vaccination should be weighed carefully in an infant or in a child suffering from a new onset or progression of a severe neurological disorder.
Infanrix hexa should be administered with caution to subjects with thrombocytopenia or a bleeding disorder since bleeding may occur following an intramuscular administration to these subjects.
Do not administer the vaccine intravascularly or intradermally.
A history of febrile convulsions, a family history of convulsions or Sudden Infant Death Syndrome (SIDS) do not constitute a contraindication for the use of Infanrix hexa. Vaccinees with a history of febrile convulsions should be closely followed up as such adverse events may occur within 2 to 3 days post vaccination.
The physician should be aware that the rate of febrile reactions is higher when Infanrix hexa is co-administered with a pneumococcal conjugate vaccine (PCV7, PCV10, PCV13), or with a measles-mumps-rubella-varicella (MMRV) vaccine, compared to that occurring following the administration of Infanrix hexa alone. These reactions were mostly moderate (less than or equal to 39°C) and transient (see Interactions and Adverse Reactions).
Increased reporting rates of convulsions (with or without fever) and hypotonic hyporesponsive episode (HHE) were observed with concomitant administration of Infanrix hexa and Prevenar 13 (see Adverse Reactions).
Antipyretic treatment should be initiated according to local treatment guidelines.
Special populations: HIV infection is not considered as a contraindication. The expected immunological response may not be obtained after vaccination of immunosuppressed patients.
Clinical data indicate that Infanrix hexa can be given to preterm infants, however, as expected in this population, a lower immune response has been observed for some antigens (see Adverse Reactions and Pharmacology: Pharmacodynamics under Actions).
The potential risk of apnoea and the need for respiratory monitoring for 48-72h should be considered when administering the primary immunisation series to very preterm infants (born ≤28 weeks of gestation) and particularly for those with a previous history of respiratory immaturity.
As the benefit of the vaccination is high in these infants, vaccination should not be withheld or delayed.
Interference with laboratory testing: Since the Hib capsular polysaccharide antigen is excreted in the urine, a positive urine test can be observed within 1-2 weeks following vaccination. Other tests should be performed in order to confirm Hib infection during this period.
Effects on ability to drive and use machines: Not relevant.
Use In Pregnancy & Lactation
As Infanrix hexa is not intended for use in adults, adequate human data on use during pregnancy or lactation and adequate animal reproduction studies are not available.
Adverse Reactions
Summary of the safety profile: As has been observed for DTPa and DTPa-containing combinations, an increase in local reactogenicity and fever was reported after booster vaccination with Infanrix hexa with respect to the primary course.
Tabulated summary of adverse reactions: Within each frequency grouping, undesirable effects are presented in order of decreasing seriousness.
Frequencies per dose are defined as follows: Very common: (≥1/10); Common: (≥1/100 to <1/10); Uncommon: (≥1/1,000 to <1/100); Rare: (≥1/10,000 to <1/1,000); Very rare: (<1/10,000).
The following drug-related adverse reactions were reported in clinical studies (data from more than 16,000 subjects) and during post-marketing surveillance. (See Table 6.)

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Experience in co-administration: Analysis of postmarketing reporting rates suggests a potential increased risk of convulsions (with or without fever) and HHE when comparing groups which reported use of Infanrix hexa with Prevenar 13 to those which reported use of Infanrix hexa alone.
In clinical studies in which some of the vaccinees received Infanrix hexa concomitantly with Prevenar (PCV7) as a booster (4th) dose of both vaccines, fever ≥38.0°C was reported in 43.4% of infants receiving Prevenar and Infanrix hexa at the same time as compared to 30.5% of infants receiving the hexavalent vaccine alone. Fever ≥39.5°C was observed in 2.6% and 1.5% of infants receiving Infanrix hexa with or without Prevenar, respectively (see Precautions and Interactions). The incidence and severity of fever following co-administration of the two vaccines in the primary series was lower than that observed after the booster dose.
Data from clinical studies show similar incidences of fever when Infanrix hexa is co-administered with other pneumococcal saccharide conjugated vaccine.
In a clinical study in which some of the vaccinees received a booster dose of Infanrix hexa concomitantly with measles-mumps-rubella-varicella (MMRV) vaccine, fever ≥38.0°C was reported in 76.6% of children receiving MMRV vaccine and Infanrix hexa at the same time, as compared to 48% of children receiving Infanrix hexa alone and 74.7% of children receiving MMRV vaccine alone. Fever of greater than 39.5°C was reported in 18% of children receiving Infanrix hexa wth MMRV vaccine, as compared to 3.3% of children receiving Infanrix hexa alone and 19.3% of children receiving MMRV alone (see Precautions and Interactions).
Safety in preterm infants: Infanrix hexa has been administered to more than 1000 preterm infants (born after a gestation period of 24 to 36 weeks) in primary vaccination studies and in more than 200 preterm infants as a booster dose in the second year of life. In comparative clinical studies, similar rates of symptoms were observed in preterm and full-term infants (refer to Precautions for information on apnoea).
Experience with hepatitis B vaccine: In extremely rare cases, allergic reactions mimicking serum sickness, paralysis, neuropathy, neuritis, hypotension, vasculitis, lichen planus, erythema multiforme, arthritis, muscular weakness, Guillain-Barre syndrome, encephalopathy, encephalitis and meningitis have been reported. The causal relationship to the vaccine has not been established.
Drug Interactions
Infanrix hexa can be given concomitantly with pneumococcal conjugate vaccine (PCV7, PCV10 and PCV13), meningococcal serogroup C conjugate vaccine (CRM197 and TT conjugates), meningococcal serogroups A, C, W-135 and Y conjugate vaccine (TT conjugate), oral rotavirus vaccine and measles-mumps-rubella-varicella (MMRV) vaccine.
Data have shown no clinically relevant interference in the antibody response to each of the individual antigens, although inconsistent antibody response to poliovirus type 2 in co-administration with Synflorix was observed (seroprotection ranging from 78% to 100%) and the immune response rates to the PRP (Hib) antigen of Infanrix hexa after 2 doses given at 2 and 4 months of age were higher if co-administered with a tetanus toxoid conjugate pneumococcal or meningococcal vaccine (see Pharmacology: Pharmacodynamics under Actions). The clinical relevance of these observations remains unknown.
Data from clinical studies indicate that, when Infanrix hexa is co-administered with pneumococcal conjugate vaccine, the rate of febrile reactions is higher compared to that occurring following the administration of Infanrix hexa alone. Data from one clinical study indicate that when Infanrix hexa is co-administered with measles-mumps-rubella-varicella (MMRV) vaccine, the rate of febrile reactions is higher compared to that occurring following the administration of Infanrix hexa alone and similar to that occurring following the administration of MMRV vaccine alone (see Precautions and Adverse Reactions). The immune responses were unaffected.
As with other vaccines it may be expected that in patients receiving immunosuppressive therapy, an adequate response may not be achieved.
Caution For Usage
Special precautions for disposal and other handling: Upon storage, a clear liquid and white deposit may be observed in the pre-filled syringe containing the DTPa-HBV-IPV suspension. This is a normal observation.
The pre-filled syringe should be well shaken in order to obtain a homogeneous turbid white suspension.
The vaccine is reconstituted by adding the entire contents of the pre-filled syringe to the vial containing the powder. The mixture should be well shaken until the powder is completely dissolved prior to administration.
The reconstituted vaccine appears as a slightly more cloudy suspension than the liquid component alone. This is a normal observation.
The vaccine suspension should be inspected visually before and after reconstitution for any foreign particulate matter and/or abnormal physical appearance. If either is observed, discard the vaccine.
Any unused medicinal product or waste material should be disposed of in accordance with local requirements.
Specific instructions for the pre-filled syringe with a luer lock adaptor PRTC): 1. Hold the syringe barrel in one hand (avoid holding the syringe plunger), unscrew the syringe cap by twisting it anticlockwise.
2. To attach the needle to the syringe, twist the needle clockwise into the syringe until it lock.
3. Remove the needle protector, which on occasion can be a little stiff.
4. Administer the vaccine.
Incompatibilities: In the absence of compatibility studies, this medicinal product must not be mixed with other medicinal products.
Storage
Store in a refrigerator (2°C - 8°C).
Do not freeze.
Store in the original package, in order to protect from light.
Shelf life: After reconstitution: an immediate use is recommended. However the stability has been demonstrated for 8 hours at 21°C after reconstitution.
ATC Classification
J07CA09 - diphtheria-haemophilus influenzae B-pertussis-poliomyelitis-tetanus-hepatitis B ; Belongs to the class of combined bacterial and viral vaccines.
Presentation/Packing
Pre-filled syringe (turbid-white suspension of DTPa-HBV-IPV component) 0.5 mL x 1's + vial (white powd of Hib vaccine).
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