When to get a tetanus shot

Written by Tang Da Wei

General Surgery

Updated on February 24, 2025

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A tetanus shot is generally recommended to be administered immediately after an injury for the best efficacy. If given within 12 or 24 hours, it still provides certain preventive effects. The tetanus shot mainly consists of tetanus antitoxin and represents passive immunization. It is usually advised in cases of deep wounds with small surface areas that can create anaerobic conditions inside. If tetanus bacillus is present in the wound and proliferates massively under anaerobic conditions, the patient may exhibit symptoms such as opisthotonos, asphyxiation, or even death. Therefore, it is necessary to administer tetanus antitoxin for prevention.

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Written by Liu Huan Huan

General Surgery

41sec

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Can I get a tetanus shot in the evening?

If a patient has a relatively deep wound, such as reaching the subcutaneous fat layer or even more severely, the muscle layer, it is important to prevent tetanus infection. It is advised that the patient must come to the hospital for a tetanus antitoxin injection into the muscle. After an injury, the sooner the tetanus antitoxin is injected, the better, as delays can affect the effectiveness of the antitoxin. Therefore, tetanus antitoxin can also be administered at night. Generally, one should go to the emergency surgery department of the hospital for the injection, as the emergency surgery department is on duty 24 hours a day, so it is possible to receive the tetanus shot at night.

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Written by Liu Huan Huan

General Surgery

47sec

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Is tetanus administered intramuscularly or subcutaneously?

Tetanus is widely used clinically and is known as tetanus antitoxin, intended solely to prevent the clinical symptoms caused by infection with Clostridium tetani. Therefore, a skin test must be conducted before administering tetanus injections. The common skin test involves creating a skin wheal intradermally; if the skin test is negative, one can proceed with the tetanus antitoxin injection. The injection can be administered intramuscularly or subcutaneously. For example, the common sites include the deltoid attachment area on the upper arm for subcutaneous injections, and the deltoid or the lateral part of the buttock for intramuscular injections, among others. These are the injection sites for tetanus.

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Written by Zhang Peng

General Surgery

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How long do you have to get a tetanus shot?

It is generally recommended to receive an injection as soon as possible after a trauma, ideally within 24 hours, because tetanus has a certain incubation period, with the shortest being able to cause disease within 24 hours. There is still value in receiving the injection after 24 hours; it can alleviate symptoms and play a preventive treatment role. For tetanus, it is usual to administer a tetanus shot, and most people can choose between tetanus antitoxin or tetanus immunoglobulin. The duration of these two drugs is not the same; tetanus antitoxin lasts about three days, while tetanus immunoglobulin can last up to three weeks. However, this is not an absolute conclusion. Beyond this time, if there are high-risk factors for reinfection, a repeat injection is needed. If a patient has previously been protected by an active immunization regimen, in most cases, no special preventive treatment is needed within three years of the last vaccination.

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Written by Zhang Da Wei

General Surgery

53sec

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How long should one abstain from certain foods for tetanus?

To determine how long to avoid certain foods for tetanus, it is necessary first to assess the onset and severity of the disease. During the onset of the disease, it is generally essential to avoid certain foods, and this dietary restriction usually lasts throughout the treatment process. If it concerns the administration of a tetanus vaccine, then dietary restrictions typically last about a week. Since the tetanus vaccine includes tetanus antitoxin, and its effective duration is about one week, it can effectively prevent tetanus bacterium infection during this time. Therefore, during this period, one must avoid certain foods, usually avoiding spicy and greasy foods. It is advisable to primarily consume a light diet, drink plenty of water, and eat plenty of vegetables and fruits to better aid in preventing tetanus bacterium.

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How long after stepping on a nail should you get a tetanus shot?

Generally, a tetanus shot can be administered within 24 hours after a trauma. Therefore, it is recommended to promptly visit a surgical department for thorough wound cleaning and disinfection, keep the wound clean and dry, and then promptly address tetanus prevention to avoid infection. Afterwards, rest well, pay attention to your diet, avoid spicy and irritating foods, maintain a good mood, and regular follow-up checks should suffice. Generally, as long as it is actively managed, it should not cause discomfort.