Quick Answer: Which Are Infectious Agents?

What are infectious agents class 9?

Infectious diseases are the diseases caused by various pathogenic microorganisms such as virus, bacteria, protozoan, fungi, and other parasites.

These infectious diseases can be transmitted by animals, humans, insects or other agents..

What are the 5 infectious agents?

There are five major types of infectious agents: bacteria, viruses, fungi, protozoa, and helminths. In addition, a new class of infectious agents, the prions, has recently been recognized. A brief review of the general characteristics of each of these agents and examples of some diseases they cause follows.

How do you identify an infectious agent?

Microscopy may identify microorganisms. Immunofluorescence, immuno-peroxidase staining, and other immunoassays may detect specific microbial antigens. Genetic probes identify genus- or species-specific DNA or RNA sequences. Culture: Isolation of infectious agents frequently requires specialized media.

Where Can infectious agents be found?

Source: Places where infectious agents (germs) live (e.g., sinks, surfaces, human skin) Susceptible Person with a way for germs to enter the body….People are one source of germs including:Patients.Healthcare workers.Visitors and household members.

How are infectious diseases classified?

The agents of infection can be divided into different groups on the basis of their size, biochemical characteristics, or manner in which they interact with the human host. The groups of organisms that cause infectious diseases are categorized as bacteria, viruses, fungi, and parasites.

What are the 7 pathogens?

Infectious diseases are caused by pathogens, which include bacteria, fungi, protozoa, worms, viruses, and even infectious proteins called prions.

What are the 4 infectious agents?

Infectious agents are organisms that are capable of producing infection or infectious disease. They include bacteria, fungi, viruses, and parasites.

What is the most common type of infectious agent?

There are different types of pathogens, but we’re going to focus on the four most common types: viruses, bacteria, fungi, and parasites.

Which infectious agent is the smallest?

What Are Viruses, Bacteria, Fungi, and Parasites? The smallest known infectious agents, prions are composed of a single protein and viroids are a simple circle of ribonucleic acid (RNA). Prions infect brain tissue and cause normal proteins to change shape leading to cell death.

How do you break an infectious agent?

Break the chain by cleaning your hands frequently, staying up to date on your vaccines (including the flu shot), covering coughs and sneezes and staying home when sick, following the rules for standard and contact isolation, using personal protective equipment the right way, cleaning and disinfecting the environment, …