32 Development of AIDS vaccine is difficult because; Select one: A. HIV undergoes reverse transcription B. HIV undergoes mutation at a rapid rate C. HIV infected CDAcells are eventually destroyed D. HIV binds to a host cell and release its genetic material into the cell Use of post exposure prophylaxis (PEP) is appropriate in; Select one: A. A breastfeeding child whose mother is HIV positive

The correct answer for the first question is B. HIV undergoes mutation at a rapid rate.<br /><br />The development of an AIDS vaccine is difficult primarily because the HIV virus undergoes rapid mutation. This high mutation rate leads to the creation of numerous variants of the virus, making it challenging for the immune system and a vaccine to effectively target and neutralize the virus. The rapid mutation rate of HIV allows it to evade the immune response and adapt quickly to changes in the host's immune system, making it difficult to develop a long-lasting and effective vaccine.<br /><br />For the second question, the correct answer is A. A breastfeeding child whose mother is HIV positive.<br /><br />Post-exposure prophylaxis (PEP) is a preventive treatment that can be used after potential exposure to HIV to reduce the risk of infection. It is appropriate for a breastfeeding child whose mother is HIV positive to use PEP to prevent the transmission of HIV from the mother to the child. PEP involves taking antiretroviral medications as soon as possible after potential exposure to HIV, typically within 72 hours. This can significantly reduce the risk of HIV infection.