In some vaccines, the antigen is highly defined e. Substance s inducing the formation of antibodies. In many states, these cards are distributed to new mothers while they are still in the hospital following delivery. Screening persons by history of ability to eat eggs without adverse effects is a reasonable way to identify those possibly at risk from receiving measles, mumps and influenza vaccine. In addition, antigens may be denatured by enzymes if they remain in fat for hours or days. It should also be based on the person's age, the volume of material to be administered, and the size of the muscle. The records are used as one teaching tool in immunization education programs aimed at increasing parental awareness of the need for vaccines.
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Several factors influence recommendations concerning the age at which vaccine is administered Tables
The importance of injecting vaccines into muscle
Therefore, simultaneous administration of all these antigens is recommended when individuals require multiple antigens and there is doubt that the recipient will return to receive further doses of vaccine. Special preparations obtained from donor pools preselected for a high antibody content against a specific disease, e. An aluminum compound is used in some vaccines to enhance the immune response to vaccines containing inactivated microorganisms or their products e. A history of delayed-type reactions to neomycin is not a contraindication to receiving these vaccines.