Answer to Question 1
D
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No specific antibiotic, antiviral, or other treatment has been found that will prevent or cure HIV/AIDS or herpes simplex virus 1 or 2 . Individuals infected with viral STIs are infected for life. Treatment of STIs is often difficult. Resistance to antibiotics is problematic. A person also may have more than one STI simultaneously, which makes treatment difficult. Antibody immunity does not develop in many of the STIs, such as chlamydia, gonorrhea, syphilis, or trichomoniasis, which leads to the need for continual surveillance and lifetime problems. Individuals may become infected more than once.
Answer to Question 2
A
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The needle's gauge and length are both important when choosing the correct type for injection. The gauge (G) is the needle's inner diameter (bore), through which medication is administered. The gauge is stated using numbers. A 25-G needle has a very small opening and would be used for subcutaneous or intradermal injections; a 23-G needle, which has a larger bore, may be used for IM injections of more viscous (thicker) liquids; an 18-G needle has a very large bore and may be used for IV injection of large amounts of medication. Needles commonly used range in length from to 2 inches. A subcutaneous injection is given with a short needle (usually inch in length); an IM injection requires a longer needle, with a larger bore, to ensure delivery into the muscle tissue.
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