7 Deadliest Bacteria on Earth


Image: Mattosaurus

E. Coli

Bacteria are the pathogens that cause deadly illness and disease in their human hosts. Millions of people every year die because of these tiny living beings that multiply in our system and take advantage of any weaknesses they find. Defining “deadly bacteria” is difficult because there are many factors, including do you look at what has killed the most in history, or the bacteria that is fatal without treatment but made innocuous with treatment? That said, here are some amazing photographs of deadly bacteria in our world.

Image: Rocky Mountain Laboratories, NIAID, NIH

7) Salmonella


Salmonella is deadly in two forms, both the enterica and the typhi. Salmonella typhi causes typhoid fever, which is responsible for the death of 216,000 persons a year in endemic areas. It is spread through feces and urine contamination. Some people are asymptomatic carriers like the famous typhoid patient Mary who was responsible for infecting 53 people and died in quarantine as the first asymptomatic carrier ever to be quarantined in the U.S.


Image: microrao

6) Tetanus


The good news about the tetanus bacteria is the development of a vaccine against it. For those who may have forgotten to get the vaccine – if you are injured where dirt-carrying spores might enter your system, the vaccine can be given then. Lockjaw and terrible spasms are the symptoms of the disease, and a good ICU is needed to have a chance at recovery.

In modern cities, it is no longer the problem it used to be, but there are still 58,000 babies who die from it yearly in the world and numerous adults who are disabled by it or die from it. Some patients are paralyzed with curare to stop the bone-breaking spasms when necessary.