Infectious diseases are disorders or illnesses that are caused by pathogens, such as bacteria, viruses, parasites or fungi. Some of them are transmissible from one individual to another, while some may be transmitted by insects, animal bites, or through contaminated food, water, and soil. Depending upon the disease, the symptoms may range from mild to life-threatening conditions.
Many of the infectious diseases, including measles, chickenpox, anthrax, and rubella are preventable by vaccinations. Let’s take a short quiz on Infectious Diseases!
