Which of the following types of shock is caused by acute infection?

Anaphylactic shock is a severe allergic reaction that occurs when the immune system overreacts to an allergen, causing rapid release of histamines. Although it can lead to serious physiological effects, it is not caused by an acute infection but rather by an allergic response to substances like foods, medications, or insect stings.

Hemorrhagic shock results from significant blood loss, which can be due to trauma, surgery, or other medical conditions that lead to bleeding. This type of shock is characterized by a decrease in blood volume rather than being associated with an acute infection, making it distinct from septic shock.

Metabolic shock occurs when there is a failure in the body's ability to utilize oxygen effectively at the cellular level, often due to conditions like severe metabolic acidosis or other metabolic derangements. While it can be related to various health issues, it is not specifically caused by an acute infection.

Neurogenic shock is caused by a disruption in the autonomic nervous system, often resulting from spinal cord injuries or trauma. This type of shock leads to vasodilatory responses and a decrease in blood pressure but is unrelated to infections, distinguishing it from septic shock.