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(B) Domestic and hospital sewage contains various pathogenic microorganisms such as bacteria, viruses, and protozoa. These pathogens are responsible f

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$I, II, III, V$

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(B) Domestic and hospital sewage contains various pathogenic microorganisms such as bacteria, viruses, and protozoa. These pathogens are responsible for water-borne diseases when untreated sewage is released into water bodies. $I-$ Dysentery and $II-$ Diarrhoea are caused by protozoans and bacteria found in sewage. $II-$ Typhoid is caused by the bacterium $Salmonella 	ext{ } typhi$. $III-$ Hepatitis (specifically Hepatitis $A$) is a viral disease transmitted through contaminated water. $V-$ Cholera is caused by the bacterium $Vibrio 	ext{ } cholerae$. $IV-$ Cancer is not a water-borne infectious disease caused by pathogens in sewage. $VI-$ $AIDS$ is caused by the $HIV$ virus, which is not transmitted through water-borne routes from sewage. Therefore, the diseases caused by water-borne pathogens from sewage are $I, II, III,$ and $V$.

Domestic and hospital sewage often contains many undesirable pathogenic microorganisms. If discharged into water bodies without proper treatment, which of the following diseases can be caused?
$I-$ Dysentery or Diarrhoea
$II-$ Typhoid
$III-$ Hepatitis
$IV-$ Cancer
$V-$ Cholera
$VI-$ $AIDS$

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Domestic and hospital sewage often contains many undesirable pathogenic microorganisms. If discharged into water bodies without proper treatment, which of the following diseases can be caused?$I-$ Dysentery or Diarrhoea$II-$ Typhoid$III-$ Hepatitis$IV-$ Cancer$V-$ Cholera$VI-$ $AIDS$