Cholera is a communicable disease that spreads through food and water. It is caused by the bacterium called Vibrio cholerae, which is found in contaminated water sources. When a person consumes food or water contaminated with the bacterium, they can become infected with cholera.

How does cholera spread through food and water?
Cholera spreads through food and water primarily due to poor sanitation and hygiene practices. When an infected person passes stool containing the Vibrio cholerae bacterium, it can contaminate water sources such as rivers, lakes, or wells. If another person consumes this contaminated water, they can become infected with cholera.

Similarly, if food is prepared using water contaminated with Vibrio cholerae, it can lead to the transmission of the disease. This can happen in settings where there is inadequate access to clean water for cooking and food preparation.

Why is cholera not spread through air?
Cholera is not spread through air because the Vibrio cholerae bacterium does not have the ability to survive outside water or moist environments for extended periods. It requires specific conditions, such as alkaline pH and a certain temperature range, which are not present in the air. Therefore, direct inhalation of the bacterium or transmission through respiratory droplets is not a common mode of transmission for cholera.

Why is cholera not spread through mosquitoes?
Cholera is not spread through mosquitoes because mosquitoes do not act as a vector for the transmission of this disease. Unlike diseases such as malaria or dengue, which are transmitted by mosquitoes, cholera is primarily transmitted through the ingestion of contaminated food and water. The Vibrio cholerae bacterium does not infect mosquitoes, and mosquitoes do not play a significant role in the spread of cholera.

In conclusion, cholera is a communicable disease that spreads through food and water contaminated with the Vibrio cholerae bacterium. It does not spread through air or mosquitoes. Proper sanitation and hygiene practices, including access to clean water and proper food handling, are crucial in preventing the transmission of cholera.