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Tetanus
What is Tetanus?
Tetanus is an infection caused by the bacterium Clostridium tetani.
Spores of the bacterium live in the soil and the disease can occur worldwide.
Infection begins when the spores are introduced into an injured wound.
The incubation period is 5-21 days. After the spores germinate, they will
release a toxin, which mainly affects the nervous system and the muscles.
The patient usually presents with painful muscular contractions, primarily
over the jaw and neck and secondarily over the trunk. Fractures and muscle
tears may follow to occur. The disease is very dangerous and often causes
death through failure to breathe.
How does it spread?
Most Tetanus cases are due to the contamination of wound by spores of
Clostridium tetani. The spores are ubiquitous in the environment and can
be introduced into the body through punctured wound site, lacerations,
burns or even trivial wounds. Injection of street drugs using contaminated
needles can also cause tetanus.
How can you prevent it?
Travellers are advised to complete the vaccination
before travelling as Tetanus can be completely preventable by active tetanus
immunization. Generally, it provides protection for ten years. Consult
your family physician if there is doubt over the details of immunization
program and to check whether the vaccination has been completed. If injury
is sustained during travel and the wound is suspected contaminated, travellers
should clean the wound properly and consult a physician at once.
How can it be treated?
Treatment consists of neutralising the toxin by administering tetanus
immune globulin; killing the bacteria with antibiotics; removing infected
tissues where necessary; and giving muscle relaxants for muscle spasms.
Sedation and respiratory support with oxygen may be required in severe
cases.
Generally, the death rate is high in children and in the elderly. If
the person survives after the illness, recovery is generally complete.
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