Table 9.4.
Sr. No. | Biological Contaminant | Types (Examples) | Diseases Produced or Health Hazards |
---|---|---|---|
1 | Bacterial pathogens | Salmonella, Shigella, Campylobacter and various pathogenic strains of Escherichia coli | Cholera, salmonellosis, shigellosis, leptospirosis |
2 | Viral pathogens | Norwalk virus, hepatitis virus, and other human enteric viruses | Hepatitis A, dengue fever, SARS CoV, legionellosis |
3 | Protozoan parasites | Entamoeba histolytica, Giardia lambia, Cryptosporidium parvum, Cyclospora, Plasmodium | Diarrhea, malaria |
4 | Helminthes | Schistosomes, Tinia solium, Liver fluke. Clonorchis sinensis | Schistosomiasis, clonorchiasis |
5 | Fungal species | Molds, yeast, and others | Toxins |
6 | Algae | Spirogyra and others | Toxins |
List is illustrative only and not exclusive/exhaustive.