WBR0608
| Author | [[PageAuthor::Ayokunle Olubaniyi, M.B,B.S [1] (Reviewed by Alison Leibowitz)]] |
|---|---|
| Exam Type | ExamType::USMLE Step 1 |
| Main Category | MainCategory::Immunology, MainCategory::Microbiology |
| Sub Category | SubCategory::General Principles |
| Prompt | [[Prompt::On December 14, 2009, the Centers for Disease Control and Prevention (CDC) established updates to the vaccinations required for immigration to the United States.
Which of the following is an inactivated/killed vaccine?]] |
| Answer A | AnswerA::Oral polio vaccine (OPV) |
| Answer A Explanation | AnswerAExp::This is a live, attenuated vaccine. |
| Answer B | AnswerB::Measles, mumps, and rubella (MMR) vaccine |
| Answer B Explanation | AnswerBExp::This is a live, attenuated vaccine. |
| Answer C | AnswerC::Tetanus-diphtheria (Td) vaccine |
| Answer C Explanation | AnswerCExp::This is an example of a toxoid or inactivated toxin. |
| Answer D | AnswerD::Human papillomavirus (HPV) |
| Answer D Explanation | AnswerDExp::This belongs to the group subunit/conjugate type i.e., they are prepared using a protein subunit of the microorganism or using a poorly immunogenic polysaccharide capsule. |
| Answer E | AnswerE::Hepatitis A vaccine |
| Answer E Explanation | AnswerEExp::This is an example of an inactivated or heat killed vaccine. |
| Right Answer | RightAnswer::E |
| Explanation | [[Explanation::A vaccine is a biological preparation that establishes immunity to a particular disease. A vaccine typically contains an agent that resembles a pathogen and is often made from an inactivated or killed form of the microorganism, its toxins, or surface proteins. The agent stimulates the body's immune system to recognize the agent as foreign, destroy it, and keep a record of it, so that in the future, when the pathogen enters the body the immune response is expedited.
There are four major types of vaccines:
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| Approved | Approved::No |
| Keyword | WBRKeyword::Live vaccines, WBRKeyword::killed vaccines |
| Linked Question | Linked:: |
| Order in Linked Questions | LinkedOrder:: |
