Question: What Are Infectious And Noninfectious Diseases Class 9?

Which pair can cause noninfectious diseases?

Instead, noninfectious diseases are generally caused by genetic or environmental factors other than pathogens, such as toxic environmental exposures or unhealthy lifestyle choices.

Most noninfectious diseases have a complex, multifactorial set of causes, often including a mix of genetic and environmental variables..

What are the 5 most common infectious diseases?

The 5 Most Common Infectious DiseasesHepatitis B. According to current statistics, hepatitis B is the most common infectious disease in the world, affecting some 2 billion people — that’s more than one-quarter of the world’s population. … Malaria. … Hepatitis C. … Dengue. … Tuberculosis.

What are infectious agents class 9?

Viruses,bacteria,fungi,protozoa,different kind of worms etc. Viruses-common cold,influenza,dengue,fever,AIDS(They live inside host cell,multiply very quickly) Bacteria-Typhoid,cholera,tuberculosis,anthrax(They also multiply very quickly) Fungi-Skin infection.

What are 3 ways in which diseases can be transmitted?

Infectious diseases can spread in a variety of ways: through the air, from direct or indirect contact with another person, soiled objects, skin or mucous membrane, saliva, urine, blood and body secretions, through sexual contact, and through contaminated food and water.

What are infectious and noninfectious diseases?

Infectious diseases are transmitted from person-to-person through the transfer of a pathogen such as bacteria, viruses, fungi or parasites. A non-infectious disease cannot be transmitted through a pathogen and is caused by a variety of other circumstantial factors.

What is the difference between infectious and noninfectious diseases quizlet?

What is the difference between an infectious disease and a noninfectious disease? … An infectious disease can be spread and is caused by a pathogen. A noninfectious disease cannot be spread and is caused different factors.

What are 5 common types of infectious diseases?

Common Infectious DiseasesChickenpox.Common cold.Diphtheria.E. coli.Giardiasis.HIV/AIDS.Infectious mononucleosis.Influenza (flu)More items…

What are 5 diseases caused by bacteria?

Bacterial diseaseBacteria.Infectious disease.Cholera.Leprosy.Tuberculosis.Plague.Syphilis.Anthrax.More items…

What are the 2 classes of infection?

Below, we’ll explore the different types of infections, list some examples you may be familiar with, and look into some possible treatments.Viral infections. Viruses are very tiny infectious organisms. … Bacterial infections. Bacteria are single-celled microorganisms. … Fungal infections. … Parasitic infections. … Prions.

What are infectious and non infectious diseases give three examples in each case?

Difference between infectious and non-infectious diseasesInfectious diseasesNon-infectious diseasesExamples: Cholera, chickenpox, malariaExamples: Diabetes, cancer, asthma, etc.2 more rows

What are 5 non infectious diseases?

The four main types of noncommunicable diseases include cardiovascular disease, cancer, chronic respiratory disease, and diabetes….Chronic respiratory diseasechronic obstructive pulmonary disease (COPD)asthma.occupational lung diseases, such as black lung.pulmonary hypertension.cystic fibrosis.

What diseases does an infectious disease doctor treat?

Infectious disease specialists see patients suffering from but not limited to:Blastomycosis.Bone and joint infections.Complicated urinary tract infections.Heart valve infections.HIV/AIDS.Lyme disease.Malaria and other tropical diseases.Measles, Mumps and Rubella.

How are infectious diseases classified?

Epidemiologists usually classify infectious diseases according to two important epidemiologic characteristics—their means of transmission and the reservoir of the organism.

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 is the infectious disease?

Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They’re normally harmless or even helpful. But under certain conditions, some organisms may cause disease. Some infectious diseases can be passed from person to person.

What are the 4 types of infectious diseases?

A variety of microorganisms can cause disease. Pathogenic organisms are of five main types: viruses, bacteria, fungi, protozoa, and worms.

What is infectious disease examples?

Infectious diseases are diseases caused by living organisms like viruses and bacteria. They can be passed from person to person through body secretions, insects or other means. Examples are SARS, influenza, the common cold, tuberculosis (TB), Hepatitis A and B.

What is the difference between a disease and an infectious disease?

Infection, often the first step, occurs when bacteria, viruses or other microbes that cause disease enter your body and begin to multiply. Disease occurs when the cells in your body are damaged — as a result of the infection — and signs and symptoms of an illness appear.