What are the 3 causes of disease?
Infectious diseases can be caused by:Bacteria.
These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis.Viruses.
Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS.Fungi.
Why is disease classification important?
Why is the ICD important? The ICD is important because it provides a common language for reporting and monitoring diseases. This allows the world to compare and share data in a consistent and standard way – between hospitals, regions and countries and over periods of time.
What are the 4 types of infectious diseases?
There are different types of pathogens, but we’re going to focus on the four most common types: viruses, bacteria, fungi, and parasites.
How do you classify an infectious disease?
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 five signs of an infection?
Know the Signs and Symptoms of InfectionFever (this is sometimes the only sign of an infection).Chills and sweats.Change in cough or a new cough.Sore throat or new mouth sore.Shortness of breath.Nasal congestion.Stiff neck.Burning or pain with urination.More items…
Which disease is caused by virus?
Viruses cause familiar infectious diseases such as the common cold, flu and warts. They also cause severe illnesses such as HIV/AIDS, Ebola, and COVID-19. Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves.