Question

multiple select question
select all that apply
which of the following are examples of systemic infections, or those that spread to several sites and tissue fluids, usually in the bloodstream?
a boil
typhoid fever
a wart
aids
an infected cut
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Explanation:

• A boil: It is a local infection caused by bacteria (usually Staphylococcus aureus). It forms a localized pus - filled lesion on the skin. So, it is not a systemic infection.
• Typhoid fever: Caused by Salmonella typhi. The bacteria enter the body (usually through contaminated food or water), multiply in the intestine, and then enter the bloodstream. They can spread to various organs like the liver, spleen, and gallbladder. So, it is a systemic infection.
• A wart: Caused by human papillomavirus (HPV). Warts are usually localized growths on the skin (common warts) or mucous membranes (genital warts). They are not systemic infections.
• AIDS (Acquired Immunodeficiency Syndrome): Caused by the human immunodeficiency virus (HIV). The virus attacks the immune system (specifically CD4+ T - cells). As the virus replicates, it spreads throughout the body via the bloodstream. The immune system's collapse makes the body vulnerable to a wide range of opportunistic infections and cancers that can affect multiple organ systems. So, it is a systemic infection.
• An infected cut: Similar to a boil, it is a local infection. Pathogens (such as bacteria) infect the site of the cut, and unless there is a complication like sepsis (which is a more severe systemic response), it remains a local infection.

Answer:

B. Typhoid fever, D. AIDS