Occasional reports of overdose have been received. The symptoms reported in these cases are not different from those reported following normal dosage.
3 years.
Hypersensitivity after previous administration.
As with other vaccines, the administration of Typherix should be postponed in subjects suffering from acute febrile illness. The presence of a minor infection, however, is not a contraindication for vaccination.
In the absence of compatibility studies, this medicinal product must not be mixed with other medicinal products.
Sodium dihydrogen phosphate dihydrate
Disodium phosphate dihydrate
Sodium chloride
Phenol
Water for injections
Solution for injection in a pre-filled syringe.
Clear isotonic colourless solution.
Summary of the safety profile
During clinical studies, the most commonly reported adverse events after the first dose were reactions at the injection site, including soreness, redness and swelling.
Tabulated summary of adverse reactions
Frequencies are reported as:
|
Very common: Common: Uncommon: Rare: Very rare: |
(> 1/10) (> 1/100 to < 1/10) (> 1/1,000 to < 1/100) (> 1/10,000 to < 1/1,000) (< 1/10,000) |
Within each frequency grouping, undesirable effects are presented in order of decreasing seriousness.
| System Organ Class | Frequency | Adverse reactions |
| Clinical trials | ||
| Nervous system disorders | Common | Headache |
| Gastrointestinal disorders | Common | Nausea |
| Skin and subcutaneous tissue disorders | Common | Itching |
| General disorders and administration site conditions | Common | Fever, general aches, malaise |
| Post-marketing surveillance | ||
| Immune system disorders | Very rare | Anaphylaxis, allergic reactions, including anaphylactoid reactions |
| Skin and subcutaneous tissue disorders | Very rare | Urticaria |
Following a second dose, there was an increased incidence of redness and soreness (>10%).
Local reactions were usually reported during the first 48 hours and systemic reactions were also transient.
Reporting of suspected adverse reactions
Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via via Yellow Card Scheme at: www.mhra.gov.uk/yellowcard.
No preclinical safety testing with the vaccine has been conducted.
Typherix is indicated for active immunisation against typhoid fever in both adults and children two years of age and older.
Pharmacotherapeutic group: Bacterial vaccine, ATC code: J07AP03
In comparative clinical studies, the immune response to Typherix was shown to be equivalent to a licensed comparator Vi polysaccharide vaccine. Seroconversion was observed in >95% of Typherix recipients when measured at two weeks after administration. Two years after vaccination 61% were seropositive, and at three years 46%.
The protective efficacy of Typherix has not been investigated in clinical trials.
For individuals who remain at - or who may be reexposed to - risk of typhoid fever, it is recommended that they be revaccinated using a single dose of vaccine with an interval of not more than 3 years.
Evaluation of pharmacokinetic properties is not required for vaccines and formal pharmacokinetic studies have not been performed.
4 June 2015
Typherix, solution for injection in a pre-filled syringe
Typhoid Polysaccharide vaccine.
SmithKline Beecham Ltd
980 Great West Road
Brentford
Middlesex TW8 9GS
Trading as:
GlaxoSmithKline UK
Stockley Park West
Uxbridge
Middlesex, UB11 1BT
Store in a refrigerator (2°C-8°C).
Do not freeze.
Store in the original package, in order to protect from light.
0.5 ml of solution in a pre-filled syringe (Type I glass) with an plunger stopper (elastomer rubber butyl) in pack sizes of 1, 10, 50 or 100.
Not all pack sizes may be marketed.
PL 10592/0126
Pregnancy
The effect of Typherix on fetal development has not been assessed.
Typherix should only be used during pregnancy when there is a high risk of infection.
Breast-feeding
The effect on breastfed infants of the administration of Typherix to their mothers has not been evaluated.
Typherix should therefore only be used in breastfeeding women when there is a high risk of infection.
Fertility
No fertility data are available.
Each 0.5 ml dose of vaccine contains:
Vi polysaccharide of Salmonella typhi (Ty2 strain) 25 micrograms
As with all injectable vaccines, appropriate medical treatment and supervision should always be readily available in case of a rare anaphylactic reaction following administration of the vaccine.
The vaccine protects against typhoid fever caused by Salmonella typhi. Protection is not conferred against disease caused by Salmonella paratyphi and other non-typhoidal Salmonellae.
Typherix has not been evaluated in children under 2 years of age. Polysaccharide vaccines in general have lower immunogenicity under this age.
Different injectable vaccines should always be administered at different injection sites.
Typherix should be administered with caution to subjects with thrombocytopenia or bleeding disorders since bleeding may occur following an intramuscular administration to these subjects: following injection, firm pressure should be applied to the site (without rubbing) for at least two minutes.
It may be expected that in patients receiving immunosuppressive treatment or patients with immunodeficiency, an adequate response may not be achieved.
Syncope (fainting) can occur following, or even before, any vaccination especially in adolescents as a psychogenic response to the needle injection. This can be accompanied by several neurological signs such as transient visual disturbance, paraesthesia and tonic-clonic limb movements during recovery. It is important that procedures are in place to avoid injury from faints.
“Undesirable Effects†may affect the ability to drive or operate machinery.
Posology
A single dose of 0.5 ml is recommended for both adults and children two years of age and older.
The vaccine should be administered at least two weeks prior to risk of exposure to typhoid fever.
Subjects who remain at risk of typhoid fever should be revaccinated using a single dose of vaccine with an interval of not more than 3 years.
Paediatric population
The safety and efficacy of Typherix in children under 2 years of age has not been established.
Method of administration
Typherix is for intramuscular injection.
Typherix should under no circumstances be administered intravascularly.
Vaccines should be inspected for any foreign particulate matter and/or variation of physical aspect. In the event of either being observed, discard the vaccine.
Shake before use.
Any unused medicinal product or waste material should be disposed of in accordance with local requirements.
05/07/2008
In clinical studies in adults aged over 18 years, Typherix has been administered concomitantly in opposite arms with Havrix Monodose (1440), GlaxoSmithKline's inactivated hepatitis A vaccine.
There was no adverse impact on either the reactogenicity or immunogenicity of the vaccines when they were administered simultaneously in opposite arms.
No interaction studies with other vaccines have been performed.
