Jaundice is caused by contaminated food and water.

Explanation:
Jaundice, also known as icterus, is a medical condition characterized by yellowing of the skin and eyes. It is caused by an increased level of bilirubin in the blood. Bilirubin is a yellow pigment that is produced when red blood cells break down. Normally, the liver processes bilirubin and excretes it in the bile. However, when the liver is unable to process bilirubin effectively, it builds up in the blood and causes jaundice.

Contaminated food and water can be a source of various infectious agents, including viruses and bacteria, that can lead to jaundice. These infectious agents can contaminate food and water during processing, handling, or storage. When contaminated food or water is consumed, the infectious agents enter the body and can cause various illnesses, including jaundice.

Hepatitis A is one of the most common causes of infectious jaundice. It is a viral infection that can be transmitted through contaminated food and water. The hepatitis A virus can survive on surfaces and in food and water for extended periods, making it easy to spread. Other viruses, such as hepatitis E, can also cause jaundice and can be transmitted through contaminated food and water.

In addition to viruses, certain bacteria can also cause jaundice. For example, the bacteria Salmonella and Campylobacter can contaminate food and water and cause gastrointestinal infections that can lead to jaundice.

Prevention of jaundice caused by contaminated food and water primarily involves practicing good hygiene and food safety measures. This includes washing hands thoroughly before handling food, cooking food thoroughly, and avoiding the consumption of raw or undercooked foods. It is also important to drink clean and safe water, and to avoid eating food from unhygienic or unreliable sources.

In conclusion, jaundice can be caused by contaminated food and water, particularly through the transmission of viral and bacterial infections. Practicing good hygiene and food safety measures can help prevent the spread of these infections and reduce the risk of developing jaundice.

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