How are vacciness generally administered?
Parenterally. Usually subcutaneous or intramuscular
Vaccines are generally administered by injection, although some may be given orally or nasally. Injection can be given through intramuscular (into the muscle), subcutaneous (under the skin), or intradermal (into the skin) routes, depending on the vaccine and the age of the patient.
Intramuscular injections are commonly given in the upper arm or thigh and are typically used for vaccines that require a larger volume of injection, such as the flu vaccine.
Subcutaneous injections are typically given on the upper arm or abdomen and are used for vaccines that require a smaller volume of injection, such as the measles, mumps, and rubella (MMR) vaccine.
Intradermal injections are given on the upper arm and require a very small volume of liquid to be injected just under the skin. This method is used for vaccines such as the tuberculosis (TB) test or the human papillomavirus (HPV) vaccine.
However, it’s important to note that not all vaccines are administered through injection, some vaccines can be given orally or nasally, such as the oral polio vaccine or the nasal flu vaccine.
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