Which type of harm is caused by biological agents such as bacteria and viruses?

• A. Mechanical harm
• B. Chemical harm
• C. Etiological harm
• D. Psychological harm

Answer: (C)

Biological agents like bacteria and viruses cause harm primarily through their influence on living organisms, leading to diseases and infections. This type of harm is classified as etiological harm, as it directly relates to the biological causes of diseases. Etiological harm encompasses the effects on the body due to the pathogenic properties of these organisms, such as the way they reproduce in a host, evade the immune system, and cause physiological reactions.

In understanding the various categories of harm, it's crucial to note that mechanical harm typically involves physical injury or damage, often resulting from force or trauma. Chemical harm refers to damage caused by chemical substances, including toxins and corrosives, which is distinctly different from the biological processes involved with pathogens. Psychological harm, while important, pertains to mental or emotional suffering, not the direct physical effects caused by biological agents.