Which statement best defines Communicable Disease?

Which statement best defines Communicable Disease?

• A. An infectious disease that can be transmitted from one person to another
• B. An illness that cannot be transmitted
• C. A disease caused by non-living factors
• D. A disease that only affects animals

Answer: (A)

Communicable disease means an infectious illness that can be transmitted from one person to another. The key point is transmission: the pathogen causing the illness can spread from an infected person to someone else through droplets from coughing or sneezing, direct contact, touching contaminated surfaces, or via a vector like a mosquito. This distinguishes it from illnesses that cannot spread between people, as well as diseases caused by non-living factors or conditions that only affect animals. For example, flu or COVID-19 are communicable because they spread between people, while a broken leg isn’t contagious and a toxin exposure isn’t caused by a living pathogen.

Communicable disease means an infectious illness that can be transmitted from one person to another. The key point is transmission: the pathogen causing the illness can spread from an infected person to someone else through droplets from coughing or sneezing, direct contact, touching contaminated surfaces, or via a vector like a mosquito. This distinguishes it from illnesses that cannot spread between people, as well as diseases caused by non-living factors or conditions that only affect animals. For example, flu or COVID-19 are communicable because they spread between people, while a broken leg isn’t contagious and a toxin exposure isn’t caused by a living pathogen.