Infectious Agents Study Guide Infectious Agents An infectious agent, also known as a pathogen, is a biological agent that causes disease or illness to its host.
Types of Infectious Agents Bacteria : single-celled microorganisms that can cause a wide range of diseases such as strep throat, tuberculosis, and urinary tract infections.Viruses : tiny infectious agents that can only replicate inside the cells of a living organism, causing illnesses like the flu, HIV/AIDS, and COVID-19.Fungi : organisms such as molds and yeasts that can cause infections like athlete's foot, ringworm, and thrush.Parasites : organisms that live on or inside a host organism and cause harm, including protozoa , helminths , and ectoparasites like ticks and lice.Infectious agents can be transmitted through various means, including:
Preventing the Spread of Infectious Agents To prevent the spread of infectious agents, it is important to practice good hygiene, such as:
Regular handwashing with soap and water Covering mouth and nose when sneezing or coughing Using personal protective equipment when necessary Getting vaccinated against infectious diseases Study Tips When studying infectious agents, it's important to:
Understand the differences between bacteria , viruses , fungi , and parasites . Learn about specific diseases caused by different types of infectious agents. Be familiar with the modes of transmission for various pathogens. Review and understand the importance of preventive measures to control the spread of infectious diseases . .