What are the Common Delivery Methods for Vaccines?
Vaccines can be delivered through several methods, each with its advantages and limitations. The most common methods are:
- Intramuscular Injection: This is the most prevalent method, where the vaccine is injected directly into the muscle. It is commonly used for vaccines like the influenza vaccine and the COVID-19 vaccines. - Subcutaneous Injection: Here, the vaccine is injected into the fatty tissue just under the skin. Vaccines such as the MMR (measles, mumps, and rubella) vaccine are often delivered this way. - Oral Vaccines: Some vaccines, like the rotavirus vaccine and the oral polio vaccine, are administered orally. This method is particularly useful in mass vaccination campaigns. - Nasal Sprays: The nasal influenza vaccine is an example where the vaccine is delivered through the nasal passages. This method is non-invasive and can be more acceptable to individuals who fear needles.
