Question

1. What are infectious diseases? 2. What is immunisation? 3. Why are we normally advised to take bland and nourishing food when we are sick? 4..What are the different means by which infectious diseases are spread?....answer fast cuz Tomorrow is my exam...don't use google...plizz...cuz i can too google if i need....​

Answer 1

Answer:

Vaccines prevent diseases that can be dangerous, or even deadly. Vaccines greatly reduce the risk of infection by working with the body's natural defenses to safely develop immunity to disease. This fact sheet explains how the body fights infection and how vaccines work to protect people by producing immunity.This protection is passed from their mother through the placenta before birth. After a short period, this natural protection goes away. Vaccines help protect against many diseases that used to be much more common. Examples include tetanus, diphtheria, mumps, measles, pertussis (whooping cough), meningitis, and polio.First, no vaccine is 100% effective. To make vaccines safer than the disease, the bacteria or virus is killed or weakened (attenuated). For reasons related to the individual, not all vaccinated persons develop immunity. Via interferons

Virally infected cells produce and release small proteins called interferons, which play a role in immune protection against viruses. Interferons prevent replication of viruses, by directly interfering with their ability to replicate within an infected cell.

Explanation:

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Answer 2

Answer:

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Explanation:

1. What are infectious diseases..

and:-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.

2.What is immunisation?

and:-Immunisation describes the process whereby people are protected against illness caused by infection with micro-organisms (formally called pathogens). The term vaccine refers to the material used for immunisation, while vaccination refers to the act of giving a vaccine to a person.

3.Why are we normally advised to take bland and nourishing food when we are sick?

and:-All the normal functions of the body get disturbed in case illness. So, a nourishing food is required, which is easily digestible and contains all the nutrients. This is the main reason that bland and nourishing food is advised to take during sickness.

4What are the different means by which infectious diseases are spread?

ans:-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.