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Tetanus
How many years can the tetanus vaccine last?
Tetanus is an acute specific infection caused by the growth and proliferation of Clostridium tetani bacteria in human wounds, producing toxins. Tetanus is a Gram-positive anaerobic spore-forming bacillus. One type of tetanus vaccine is DTP, which includes diphtheria, tetanus, and pertussis and is administered in childhood. It requires three doses and generally maintains effectiveness for five to ten years. Subsequently, a booster shot can be administered every five to ten years. If a new wound occurs and it's associated with tetanus, the duration of tetanus maintenance in the human body is generally five to six days, after which it is quickly cleared.
Is tetanus easy to get?
Tetanus is typically caused by the entry of Clostridium tetani into the body through broken skin or mucous membranes, producing toxins that lead to a specific infection. In daily life, Clostridium tetani is ubiquitous, present in places like moist soil, rusty iron, and some bamboo sticks. When an injury occurs, if the wound is deep, it should be promptly cleaned with hydrogen peroxide and saline solution. Then, it is best to go to a hospital to receive a tetanus vaccine within 24 hours. A wound that has been vaccinated against tetanus generally does not get infected. Therefore, when there is a wound, as long as the wound is timely cleaned, contaminants or foreign objects removed, and then a tetanus vaccine administered at a formal medical institution, tetanus is not so easy to contract.
Where is the tetanus shot administered?
When there is a risk of tetanus infection due to contamination and suspected foreign objects in a wound, it is best to go to the hospital within 24 hours to get a tetanus vaccine. Currently, there are mainly two injection sites for the tetanus vaccine: one is the deltoid area of the upper arm, and the other is the upper outer side of the gluteus maximus in the buttocks. Most hospitals now advocate administering the tetanus injection in the gluteus maximus. After the injection, observe for half an hour before leaving.
How long does a tetanus shot last?
Tetanus shot refers to the tetanus antitoxin, which is a form of passive immunity. This means that when a patient suffers from external injuries, such as wounds on the feet or hands, the drug injected to prevent infection by tetanus bacillus inside the wound is tetanus antitoxin. It generally maintains its effect in the patient's body for about a week. If the patient's wound inflammation is severe and there is a suspicion of tetanus infection, it is necessary to clean the wound. If required, another injection of tetanus antitoxin might be needed after a week. On the other hand, getting the tetanus vaccine, which is an active immunity, usually involves the DTP vaccine and generally lasts about ten years.
Which part of the body is the tetanus shot administered?
Tetanus shots are administered in the buttocks or the muscular part of the upper arm, typically given as a muscle injection. Tetanus shots must not be administered intravenously. Before administering a tetanus shot, a skin test is conducted. If the skin test is positive, it is necessary to switch to a tetanus immune globulin that does not require a skin test; if the skin test is negative, a muscle injection can be performed. Tetanus is caused by the colonization of Clostridium tetani in the human body, producing neurotoxins, leading to a specific type of infection. Therefore, if the wound is deep and heavily contaminated, it is essential to promptly treat with a tetanus shot.
Can you get a tetanus shot when you have a cold?
The patient is in a state of having a cold. During this time, if a part of the body is injured and the wound is deep, there is a possibility of infection by tetanus bacillus, which can cause corresponding clinical symptoms. This is because the deep wound facilitates the growth and reproduction of tetanus bacillus, producing exotoxins, mainly the spasm toxin, which can cause the patient to exhibit symptoms related to tetanus. Therefore, even if the patient has a cold, it is advised to seek timely medical treatment at a hospital for wound disinfection and to receive a tetanus antitoxin injection. Having a cold is not a contraindication for receiving a tetanus shot.
What are the chances of getting tetanus?
In clinical practice, the chances of tetanus are relatively low. Tetanus is mainly caused by infection with the tetanus bacillus. Since the tetanus bacillus is an anaerobic bacterium and is found almost everywhere in nature, patients with injuries, especially small and deep wounds, are prone to tetanus infection. Therefore, for wounds with injuries, especially deep ones, it is important to promptly administer a tetanus shot to prevent infection. At the same time, thorough debridement of the wound is necessary to completely eliminate the tetanus bacillus from the wound. If prevention or proper wound cleaning is not effectively carried out, there is a potential risk of tetanus infection.
Does a tetanus shot hurt?
Tetanus shots are certainly painful, but why do they hurt? Firstly, because a skin test is needed for tetanus, which primarily involves injecting the drug under the skin of the forearm to form a small bump about 0.5cm in diameter. It is known that there are abundant nerve endings under the skin, so the injection of the drug can cause local swelling and compress the surrounding nerves, and the drug can also cause an irritation response in the surrounding nerves, which is why tetanus shots are painful.
How deep does a wound have to be to cause tetanus?
There is no specific rule about how deep a wound needs to be to develop tetanus. Generally, any relatively contaminated wound that is sharp and deep should receive a prompt tetanus injection, as tetanus is a strictly anaerobic bacterium. Generally, if a wound is particularly prone to forming a locally hypoxic environment, active immunization should be pursued. Usually, the following types of wounds should be given high attention: deep puncture wounds, bullet or shrapnel injuries, open fractures, or crush injuries. Burns, frostbites that require surgical intervention, and wounds that have not been treated in a timely manner after more than six hours should also be taken seriously. Attention should be heightened if there are foreign objects in the wound or a significant amount of necrotic tissue, especially if contaminated by surrounding dust or animal feces.
How many years does the tetanus vaccine last?
Tetanus vaccines generally involve an active immunization process against tetanus with a complete immunization schedule, providing effective protection for up to ten years for those who have completed the full course of prevention. Typically, newborns must receive three doses of the DTP (diphtheria, tetanus, pertussis) vaccine, with the first dose administered at three months of age, followed by a dose each subsequent month, and booster shots at eighteen months or six years of age. If vaccinated, no further tetanus antitoxin or tetanus immunoglobulin injections are required for injuries incurred within ten years of vaccination. If no active immunization has been done and the wound is heavily contaminated, it is crucial to promptly administer tetanus antitoxin or tetanus immunoglobulin. A skin test must be performed before using tetanus antitoxin; if the test is strongly positive, immunoglobulin should be administered for preventive treatment.