Virus y bacteria

The difference between viruses and bacteria lies in the fact that the virus is harmful to our health causing diseases , on the other hand, bacteria are microorganisms with which we live daily , generating more benefits than diseases.

Both viruses and bacteria are microorganisms . The bacterium is considered a living organism due to its complexity and its ability to reproduce independently . It is questioned whether the virus is considered a living organism before finding a host cell , where it lodges in order to reproduce, since without it it cannot ‘live’.

Both cause diseases, but they differ because bacteria not only cause diseases, but are necessary for the balance of our body: they are called good bacteria, the intestinal flora that regulates our pH is an example of this.

Nowadays, thanks to science and technology, it has been possible to use some viruses in a beneficial way, such as bacteriophages . Scientists take advantage of the characteristics of viruses to lodge in cells for their subsequent destruction to fight, for example, brain tumors.

Some of the basic characteristics between viruses and bacteria are:



  • acellular microorganism,
  • does not have its own metabolism,
  • it needs cells from other organisms called “host cells” to live and reproduce.
  • single-celled microorganism,
  • coexists with living beings,
  • it has the structure and DNA necessary to reproduce.


  • it mutates to suit its host.
  • the largest virus is the size of the smallest bacteria.
  • it is a living organism,
  • in the human body there is 90% microbial life versus 10% human cells.
Cause of illnessInfection of the virus that lodges in host cells changing its DNA for its own, eventually destroying the cells.Increase in the amount of bacteria and products of your metabolism that cause disease.
Examples of diseases
  • Page (VIH virus)
  • Chickenpox
  • Influenza
  • Hepatitis B
  • Herpes
  • Rage
  • Pneumonia
  • Bacterial food infection (E. Coli)
  • Meningitis
  • Gonorrhea
  • Infections in general
Prevention and curePreventive and antiviral vaccines.Bacterial balance of the organism and antibiotics.

See also:

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