Although, E.coli is helpful to us, some strains of E.Coli bacteria are harmful to humans. The reason is because E.coli bacteria travel through many different types of sources. Examples of sources which E.Coli bacteria travel through are manure, water, undercooked meat and unclean vegetables. It is because E.coli travels through these which are why the bacteria can be controlled by viruses. An example of such virus would be a virus called Bacteria phage. If these strains of E.coli bacteria is ingested by humans, it could cause vomiting and kidney failures, but in rare cases it can even cause death.

Reproduction

E.coli bacteria, like most bacteria reproduce asexually using binary fission. In rare cases E.Coli Bacteria will reproduce sexually by Conjugation. The reason E.Coli bacteria tend to reproduce asexually is because, binary fission reproduce in a faster rate compared to sexually reproduction.

Conclusion

Although some strains of E.Coli bacteria causes many troubles for humans to function properly after being ingested, but it is also essential to have certain types of E.Coli bacteria in out body so that we can be replenished by the right kind of nutrients.