Final answer:
Bloodborne pathogens are pathogenic microorganisms present in human blood that can cause diseases, including bacteria, viruses, fungi, and protozoa. They can trigger a range of illnesses and are capable of spreading from one person to another.
Step-by-step explanation:
Pathogenic microorganisms present in human blood that can cause disease are called bloodborne pathogens. These include a variety of microorganisms such as bacteria, viruses, fungi, and protozoa. These pathogens can cause a range of diseases, from mild illnesses to serious conditions like septicemia where bacteria are both present and multiplying in the blood. While pathogens can enter the bloodstream through various means, they are also capable of spreading diseases by moving from host to host. Effective treatments, such as antibiotics, exist for many diseases caused by bacteria, but emerging issues like drug-resistant pathogens pose new challenges.