Hepatyrix
Hepatitis A (inactivated, adsorbed) and Typhoid Polysaccharide vaccine. Suspension for
injection
QUALITATIVE AND QUANTITATIVE COMPOSITION
1 dose (1 ml) contains:
Inactivated Hepatitis A virus (HM175 strain)* 1440 ELISA Units
Vi polysaccharide of Salmonella typhi (Ty2 strain) 25 micrograms
adsorbed on aluminium hydroxide (adjuvant) Total: 0.5 milligrams Al3+
* propagated on MRC-5 human diploid cells
For excipients, see 6.1.
Therapeutic indications
Active immunisation against hepatitis A virus
infection and typhoid fever for adults and adolescents 15 years of age and older.
Hepatyrix should be given in accordance with official recommendations.
Posology and method of
administration
Posology
Primary vaccination
A single dose of 1.0 ml is recommended for both adults and adolescents aged 15 years
and older.
The vaccine should be given at least two weeks prior to risk of exposure to typhoid and
hepatitis A (see section 5.1 for immunogenicity data).
Booster vaccination
In order to provide long term protection against infection caused by hepatitis A virus,
a booster dose of an inactivated hepatitis A vaccine is recommended at any time between 6
and 12 months after a single dose of Hepatyrix.
Hepatyrix may also be given as a single dose of 1.0 ml for booster vaccination between
6 and 12 months following primary immunisation with an inactivated hepatitis A vaccine to
subjects who also require protection against typhoid fever.
Subjects who remain at risk of typhoid fever should be revaccinated using a single dose
of Vi polysaccharide vaccine every 3 years, unless it is also appropriate to administer a
booster of hepatitis A vaccine, in which case Hepatyrix may be used.
As Hepatyrix has not been studied in subjects under 15 years of age, it is not
recommended for use in this age group.
Method of Administration
Hepatyrix is for intramuscular administration in the deltoid region.
The vaccine should not be administered in the gluteal region.
Hepatyrix should under no circumstances be administered intravascularly.
Hepatyrix should not be administered subcutaneously/intradermally since administration
by these routes may result in a suboptimal response to the vaccine.
In exceptional circumstances, Hepatyrix may be administered subcutaneously to subjects
with thrombocytopenia or bleeding disorders since bleeding may occur following an
intramuscular administration to these subjects. Firm pressure should be applied to the
injection site (without rubbing) for at least two minutes after the injection.
Contraindications
Hepatyrix should not be administered to subjects
who have had a hypersensitivity reaction to a previous dose of Hepatyrix or a dose of
either of the monovalent vaccines Havrix and Typherix.
Hepatyrix should not be administered to subjects who are known to be hypersensitive to
any component of the vaccine.
Hepatyrix contains traces of neomycin. The vaccine should not be used in subjects with
known hypersensitivity to neomycin.
As with other vaccines, the administration of Hepatyrix should be postponed in subjects
suffering from acute severe febrile illness. The presence of a minor infection, however,
is not a contra-indication for vaccination.
Special warnings and
special precautions for use
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.
In subjects with an impaired immune system, adequate anti-HAV and anti-Vi antibody
titres may not be obtained after a single dose of Hepatyrix and such patients may
therefore require administration of additional doses of vaccine. If possible, vaccination
should be delayed until the completion of any immunosuppressive treatment. Subjects with
chronic immunodeficiency such as HIV infection may be vaccinated if the underlying
immunodeficiency allows the induction of an antibody response, even if limited.
It is possible that subjects may be in the incubation period of a hepatitis A infection
at the time of vaccination. It is not known whether Hepatyrix will prevent clinically
apparent hepatitis A infections in such cases.
Hepatyrix will not prevent infection caused by other hepatitis-causing agents such as
hepatitis B virus, hepatitis C virus, hepatitis E virus or other pathogens known to infect
the liver.
Hepatyrix protects only against typhoid fever caused by Salmonella enterica serotype
Typhi. Protection is not conferred against paratyphoid fever or infections with any
other serotypes of S. enterica.
As with any vaccine, a protective immune response may not be elicited in all vaccinees.
Interaction with other
medicinal products and other forms of Interaction
Hepatyrix must not be mixed with any other vaccine
in the same syringe.
If Hepatyrix is to be given at the same time as (an)other injectable vaccine(s), the
vaccines should always be administered at different injection sites.
Hepatyrix contains purified inactivated hepatitis A antigen and purified Vi capsular
polysaccharide. Although concomitant use with other inactivated vaccines has not
specifically been studied, it is anticipated that no interaction will be observed.
Concomitant administration of yellow fever vaccine with Hepatyrix has not been
specifically assessed. However, based on data obtained from the concomitant administration
of various monovalent vaccines (purified Vi polysaccharide typhoid vaccine or inactivated
hepatitis A vaccine) with yellow fever vaccine, no interference with the immune responses
to any of these antigens would be expected.
The effect of concomitant administration of immunoglobulins on the immunogenicity of
Hepatyrix has not been assessed. Therefore, interference with the immune response cannot
be ruled out.
Pregnancy and lactation
Pregnancy
Adequate human data on use during pregnancy and adequate animal reproduction studies
are not available. Hepatyrix should only be used after careful consideration of the
risk-benefit relationship.
Lactation
Adequate data on the administration of Hepatyrix to women who are breast-feeding their
infants are not available. Hepatyrix should be used during breast-feeding only when
clearly needed.
Effects on ability to
drive and use machines
Some of the effects mentioned under section 4.8
Undesirable effects may affect the ability to drive or operate machinery.
Undesirable effects
In controlled clinical studies, the most commonly
reported reactions after administration of Hepatyrix were those at the site of injection.
All local and general symptoms resolved without any sequelae.
Frequencies are reported as:
Very common: 10%
Common: 1% and < 10%
Uncommon: 0.1% and < 1%
Rare: 0.01% and < 0.1%
Very rare: < 0.01%
Application site:
Very common: pain, erythema
Common: swelling
Systemic adverse events with at least a suspected causal relationship to vaccination
are listed below:
Body as a whole:
Common: malaise, headache, general aches, fever
Gastro-intestinal system:
Common: nausea
Skin and appendages:
Common: itching
During postmarketing surveillance, the following undesirable events have been reported
in temporal association with Hepatyrix vaccination:
Body as a whole:
Very rare: allergic reactions, including anaphylaxis and anaphylactoid reactions
Cardiovascular general:
Very rare: syncope
Skin and appendages:
Very rare: skin rashes
In controlled clinical studies with the GlaxoSmithKline monovalent hepatitis A vaccine,
systemic adverse events such as vomiting and loss of appetite have been reported.
During postmarketing surveillance, the following undesirable effects have been reported
very rarely with the GlaxoSmithKline monovalent hepatitis A vaccine : convulsions,
arthralgia, myalgia, neurological manifestations, including transverse myelitis,
Guillain-Barre syndrome and neuralgic amyotrophy.
PHARMACOLOGICAL PROPERTIES
Pharmaco-therapeutic group: Bacterial and viral
vaccines combined, ATC code JO7C (combined)/P03 (typhoid)/C02 (Hepatitis A)
Pharmacodynamic
properties
Hepatyrix confers immunity against typhoid fever
and HAV infection by inducing specific anti-Vi and anti-HAV antibodies.
In clinical studies involving 462 subjects of 15-50 years of age, seropositivity rates
for anti-HAV and anti-Vi antibodies were 89.8% and 97.5% respectively two weeks after
primary immunisation. At month 1, seropositivity rates for anti-HAV and anti-Vi antibodies
were 99.0% and 95.7% respectively.
In a clinical study where a group of 99 subjects received a booster dose of hepatitis A
vaccine 12 months following the initial dose of Hepatyrix, all subjects were seropositive
for anti-HAV antibodies one month later (i.e. at month 13).
When Hepatyrix was given 12 months following primary vaccination with the hepatitis A
vaccine in a cohort of 97 subjects, the seropositivity rates for anti-Vi and anti-HAV
antibodies were 88.2% and 100% respectively one month later (i.e. at month 13).
In a long term clinical study, the persistence of antibodies has been evaluated in 118
subjects up to 36 months after vaccination with Hepatyrix and a booster dose of Havrix
1440 administered six months later. At month 36, 53% were still seropositive with respect
to anti-Vi antibody and 100% for anti-HAV antibodies. These seropositivity rates are
similar to those seen in subjects in other clinical trials who were followed up for a
similar period after vaccination with either of the licensed monovalent Vi polysaccharide
vaccines or a licensed hepatitis A vaccine.
With respect to the hepatitis A component, based on data generated after administration
of a booster dose of a monovalent hepatitis A vaccine between six and twelve months
following the initial dose of the monovalent hepatitis A vaccine, it is predicted that
anti-HAV antibodies persist for many years (at least 10 years).
List of excipients
Sodium chloride
2-phenoxyethanol (preservative)
Water for injections.
For adjuvants, see section 2.
Special precautions for
storage
Store at 2°C 8°C (in a refrigerator).
Store in the original package in order to protect from light.
Do not freeze. Discard if vaccine has been frozen.
Nature and contents of
container
1 ml of suspension in prefilled syringe (type I
glass) with a plunger stopper (butyl rubber) with or without needles. Packs of 1 and 10
(with needles). Packs of 1, 10, 20 and 50 (without needles).
Not all packs may be marketed.
Instructions for use and
handling
The vaccine's normal appearance is a cloudy white
suspension, which may sediment during storage. Shake the container well to distribute the
suspension uniformly before administering the vaccine.
The vaccine should be inspected visually for extraneous particulate matter and/or
discolouration prior to administration. Any unused vaccine or waste material should be
disposed of safely in accordance with local regulations.
Administrative Data
SmithKline Beecham plc
Trading as:
GlaxoSmithKline UK,
Stockley Park West,
Uxbridge,
Middlesex, UB11 1BT8.
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