To obtain immediate immunity against tetanus, a patient should receive:
a. An attenuated vaccine of Clostridium tetani
b. A modified live vaccine of C. tetani
c. Tetanus toxoid
d. Immunoglobulin against tetanus toxin (antitoxin)

Verified step by step guidance

Understand the difference between active and passive immunity: Active immunity involves stimulating the body's own immune system to produce antibodies, which takes time to develop. Passive immunity involves the direct transfer of antibodies, providing immediate protection.

Review the options: Options a, b, and c involve vaccines (attenuated, modified live, or toxoid), which stimulate active immunity and therefore require time for the immune response to develop.

Recognize that immediate immunity requires ready-made antibodies, which are provided by immunoglobulins or antitoxins, offering passive immunity.

Identify that immunoglobulin against tetanus toxin (antitoxin) provides immediate protection by neutralizing the toxin directly without waiting for the body to produce its own antibodies.

Conclude that to obtain immediate immunity against tetanus, the patient should receive immunoglobulin against tetanus toxin (antitoxin), as it provides passive immunity instantly.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Active vs. Passive Immunity

Active immunity involves stimulating the body's immune system to produce its own antibodies, usually through vaccines, and takes time to develop. Passive immunity provides immediate protection by directly supplying antibodies, such as immunoglobulins, but this protection is temporary.

Tetanus Toxoid Vaccine

The tetanus toxoid vaccine contains an inactivated toxin that triggers the immune system to produce antibodies against tetanus toxin. It is used for long-term immunity but does not provide immediate protection because the immune response takes days to weeks to develop.

Tetanus Immunoglobulin (Antitoxin)

Tetanus immunoglobulin is a preparation of antibodies against tetanus toxin, providing immediate passive immunity. It is used in cases of potential tetanus exposure to neutralize the toxin quickly while the body develops its own immune response.

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