Which vaccines are exceptions to the rule of being counted as valid if given by the wrong route?

The correct choice highlights that Hepatitis B and Rabies vaccines are exceptions to the general rule surrounding the validity of vaccine administration routes.

In the context of immunization, vaccines must be administered through specific routes to ensure they elicit the proper immune response. While many vaccines can be valid even if administered by the wrong route, Hepatitis B and Rabies must be given via specific routes to maintain their efficacy. Hepatitis B is typically given intramuscularly, and deviating from this can significantly reduce its effectiveness. Similarly, the Rabies vaccine, particularly post-exposure prophylaxis, must be administered by the intramuscular route to provide adequate protection against the virus.

Understanding the unique characteristics and administration guidelines for these vaccines emphasizes the importance of adhering to specified routes to ensure optimal immune protection. This highlights the need for healthcare professionals to be vigilant about proper vaccine administration to ensure patient safety and vaccine efficacy.