USA HISTORY

Detailed explanation-1: -Cholera is an acute diarrheal illness caused by infection of the intestine with Vibrio cholerae bacteria. People can get sick when they swallow food or water contaminated with cholera bacteria. The infection is often mild or without symptoms, but can sometimes be severe and life-threatening.

Detailed explanation-2: -Individuals with achlorhydria (the absence of hydrochloric acid in digestive stomach juices), blood type O, chronic medical conditions, and those without ready access to rehydration therapy and medical services are more likely to have severe disease from cholera and suffer poor outcomes.

Detailed explanation-3: -History. During the 19th century, cholera spread across the world from its original reservoir in the Ganges delta in India. Six subsequent pandemics killed millions of people across all continents. The current (seventh) pandemic started in South Asia in 1961, reached Africa in 1971 and the Americas in 1991.

Detailed explanation-4: -The Public Health Act of 1875 later helped to eliminate this problem as local authorities replaced the local boards which became responsible for the provision of clean water, proper drainage and sewage systems.