What do we mean by infectious diseases Class 8?

Infectious diseases are diseases that are caused by pathogens and are capable of spreading from a diseased person to a healthy person.

What are infectious diseases give examples Class 9?

Infectious diseases are those diseases that can be easily transmitted from one person to another. They can be caused by bacteria, viruses, fungi, or protozoans. Examples of infectious diseases include Chickenpox, influenza (common flu), etc. Was this answer helpful?

What are infectious diseases give two example?

The flu, measles, HIV, strep throat, COVID-19 and salmonella are all examples of infectious diseases.

What are the 4 types of infectious diseases?

The four different categories of infectious agents are bacteria, viruses, fungi, and parasites. When studying these agents, researchers isolate them using certain characteristics: Size of the infectious agent.

Other common viruses include:

  • Common cold.
  • Norovirus.
  • Stomach flu.
  • Hepatitis.

What do we mean by infectious diseases Class 8? – Related Questions

What are infectious and noninfectious diseases Class 9?

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 disease Class 9?

Any condition which impairs health, or interferes with the normal functioning of the body is called disease.

What are the infectious agents class 9?

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

What are the two types of diseases Class 9?

Types of Diseases
  • Infectious diseases.
  • Non-infectious diseases.
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What are diseases called?

disease, any harmful deviation from the normal structural or functional state of an organism, generally associated with certain signs and symptoms and differing in nature from physical injury. A diseased organism commonly exhibits signs or symptoms indicative of its abnormal state.

What are causes of infectious diseases?

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.
  • Parasites.

Why do we fall ill?

Infectious diseases are caused by pathogens such as bacteria, viruses, fungi and parasites entering the body through the air we breathe, the food and drink we consume or through openings in the skin, such as cuts. As an example, through cough and sneezing a person can spread the cold virus to another.

What is difference between health and disease?

Hint: According to WHO “Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity”. While the disease is the condition of abnormal dysfunction of the mental-physical states thus leading to illness.

What does disease look like?

Note: Disease can be viewed by examining symptoms of disease. The common symptoms of diseases include headache, fever, vomiting etc. Like jaundice can be examined by pale skin. Diarrhoea can be examined by loose motions.

What are symptoms Class 9?

A symptom is any subjective evidence of disease, while a sign is any objective evidence of disease. Therefore, a symptom is a phenomenon that is experienced by the individual affected by the disease, while a sign is a phenomenon that can be detected by someone other than the individual affected by the disease.

What are the types of diseases?

There are four main types of disease: infectious diseases, deficiency diseases, hereditary diseases (including both genetic diseases and non-genetic hereditary diseases), and physiological diseases. Diseases can also be classified in other ways, such as communicable versus non-communicable diseases.

Why do we fall ill Mcq question?

Answer: (c) Peptic ulcers are caused by eating acidic food.

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Why do we Fall Ill Class 9 MCQs Questions with Answers.

Column I Column II
(a) Kala-azar (i) Staphylococci
(b) Jaundice (ii) Antibiotic
(c) Sleeping sickness (iii) Female anopheles
(d) Acne (iv) Sexually transmitted disease

Why do we fall ill answers?

Answer: This is because the immune system of our body is normally fighting off microbes. Our body have cells that are specialised in killing infecting microbes. Whenever any microbes or foreign body enters our system, these cells become active and kill the microbes that could cause any damage to the body.

What is vaccination Class 9?

Vaccination is the injection of a dead or weakened organism that forms immunity against that organism in the body. Immunization is the process by which an animal or a person stays protected from diseases.

What are the two basic principles of prevention of infectious diseases?

For effective prevention of diseases, everyone should practice public hygiene and immunization.

What is the difference between healthy and disease free?

Both healthy and disease-free are states of human who are normal.


Difference Between Healthy and Disease Free
Healthy Disease Free
A healthy person is energetic and is able to perform as per the requirement The performance of a disease-free person depends upon the environment and personal attitude

What is important to prevent the infectious diseases?

Wash your hands well

Washing hands properly is one of the most important and effective ways of stopping the spread of infections and illnesses. Wash your hands thoroughly using water and plain soap. Wash for at least 20 seconds and dry them completely. Using warm water is preferable, if available.

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