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Vaccinations

Vaccinations

Drug Delivery: Parenteral Route

Drug Delivery: Parenteral Route

The parenteral route is a critical method of drug administration. It delivers compounds directly into the systemic circulation and bypasses the gastrointestinal tract. This approach is particularly advantageous for drugs that exhibit poor absorption or instability when administered orally.
There are three primary parenteral routes: intravenous (IV), intramuscular (IM), and subcutaneous (SC). The IV route introduces the drug directly into the bloodstream, ensuring immediate action. The IM route...

Routes of Drug Administration: Parenteral

Routes of Drug Administration: Parenteral

The administration of drugs via parenteral routes allows for direct drug introduction into the systemic circulation, resulting in high bioavailability because the medication bypasses the harsh conditions of the gastrointestinal tract and hepatic metabolism.
The intravenous route (IV) of drug administration can be further categorized into two types. The bolus injection administers the entire dose rapidly, while an intravenous infusion slowly delivers smaller doses steadily.
The IV route is often...

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Protective Efficacy and Pulmonary Immune Response Following Subcutaneous and Intranasal BCG Administration in Mice

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Efficacy of Influenza Inoculation: Intradermal versus Subcutaneous Route.

D Lawee, D Steele, M Gutman

Canadian Family Physician Medecin De Famille Canadien

|February 4, 2011

Summary

Intradermal Fluviral vaccine injection showed equal efficacy to subcutaneous injection in older adults, with no difference in adverse reactions. However, many participants in both groups did not achieve protective antibody levels.

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Intranasal Administration of Recombinant Influenza Vaccines in Chimeric Mouse Models to Study Mucosal Immunity

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Area of Science:

Immunology
Vaccinology
Geriatric Medicine

Background:

Intradermal antigen injection theoretically requires less volume than subcutaneous injection for antibody response.
Evaluating alternative vaccine delivery methods is crucial for optimizing immunogenicity and patient compliance.

Purpose of the Study:

To compare the efficacy and safety of intradermal versus subcutaneous Fluviral vaccine injection in an ambulatory geriatric population.
To assess the antibody response and adverse reactions associated with different administration routes.

Main Methods:

A comparative study involving ambulatory geriatric participants receiving Fluviral vaccine via intradermal or subcutaneous injection.
Monitoring of antibody levels (Hemagglutination Inhibition - HAI) and adverse events in both vaccination groups.

Main Results:

Intradermal Fluviral vaccine injection demonstrated comparable efficacy to subcutaneous injection in the geriatric cohort.
No significant differences in adverse reactions were observed between the intradermal and subcutaneous groups.
A substantial percentage of participants in both groups did not attain a protective HAI antibody level of 1/40 or higher.

Conclusions:

Intradermal injection is a viable and equally effective alternative to subcutaneous injection for Fluviral vaccination in older adults.
Despite equal efficacy, the study highlights a potential limitation in achieving adequate protective antibody titers in a significant portion of the geriatric population, irrespective of the injection route.
Further research may be needed to optimize vaccine strategies for this demographic to ensure robust immune protection.