A cholera epidemic in Peru had all of the following characteristics. Which one led to the others?
a. Eating raw fish
b. Sewage contamination of water
c. Catching fish in contaminated water
d. Vibrio in fish intestine
e. Including fish intestines with edibles

검증된 단계별 안내

Step 1: Understand the transmission cycle of Vibrio cholerae, the bacterium causing cholera. It typically spreads through ingestion of contaminated water or food.

Step 2: Identify the primary source of contamination in the options. Sewage contamination of water (option b) introduces Vibrio cholerae into the aquatic environment.

Step 3: Recognize that once water is contaminated, fish living in that water can ingest Vibrio, leading to Vibrio presence in fish intestines (option d).

Step 4: Eating raw fish (option a) or including fish intestines with edibles (option e) can then transmit the bacteria to humans, causing infection.

Step 5: Catching fish in contaminated water (option c) is a consequence of sewage contamination, linking the initial contamination to subsequent steps in the transmission chain.

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

주요 개념

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Transmission Pathways of Waterborne Diseases

Waterborne diseases like cholera spread primarily through contaminated water sources. Understanding how pathogens enter and move through water systems is crucial, as contamination often leads to infection via ingestion or contact with polluted water or food.

Role of Sewage Contamination in Epidemics

Sewage contamination introduces harmful bacteria such as Vibrio cholerae into water supplies. This contamination is a primary source of cholera outbreaks, as it facilitates the pathogen's entry into the environment and subsequent transmission to humans.

Food Chain Contamination and Disease Spread

Pathogens can accumulate in aquatic organisms like fish when they inhabit contaminated waters. Consuming these organisms, especially if raw or improperly prepared, can transmit diseases to humans, linking environmental contamination to foodborne illness.

A cholera epidemic in Peru had all of the following characteristics. Which one led to the others?a. Eating raw fishb. Sewage contamination of waterc. Catching fish in contaminated waterd. Vibrio in fish intestinee. Including fish intestines with edibles