3 ways bacteria harms humans

Food poising

Bacteria is the main cause of many food borne illnesses such as undercooked meat.

E.coli (escherichia coli) Found in beef and unwashed vegetables. Chicken is known for salmonella caused by eating raw chicken or undercooking it.

Wound infection

Bacteria may also cause sepsis in an untreated wound. if the wound is left untreated these infections will cause the loss of limbs or even death.


Many forms of bacteria are found in untreated water which can result in severe harm to the human digestive tract and its local flora. All symptoms lead to the flu.