Children as young as 3 years old can usually get immunoglobulin. Different types of immunoglobulin work for different lengths of time, usually lasting about a month or several years after injection.
Immunoglobulin is an injectable that is indispensable in the body’s immune system and is used for passive immunization against hepatitis B, tetanus, bronchial asthma, allergic skin diseases, measles, and bites and scratches from rabid animals, etc. Three-year-olds can usually get immunoglobulin if they have any of the above conditions.
The duration of immunoglobulin injections depends on the type of immunoglobulin. For example, rabies immunoglobulin lasts for several years; tetanus immunoglobulin lasts for only about a month.
Immunoglobulins should be used with caution in people with allergies, and should not be used again if you are allergic to them.
If a 3-year-old child needs immunoglobulin, it is recommended that the medication be administered under the guidance of a doctor, rather than blindly on its own to avoid adverse effects.