"Infectious Diseases and Their Prevention" Infectious Diseases and Immunity PPT Courseware 2

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"Infectious Diseases and Their Prevention" Infectious Diseases and Immunity PPT Courseware 2

What is the difference between communicable diseases and non-communicable diseases?

Myopia:

It is caused by changes in the patient's own eyeball structure. It cannot be contagious.

Conjunctivitis:

Caused by foreign pathogenic bacteria or viruses, it is contagious.

ANALYSE information

1. Analyze the transmission routes of influenza and talk about why you should cover your mouth and nose with a handkerchief when you cough or sneeze. Why are the elderly and children more susceptible to influenza?

The main modes of transmission of influenza are droplets and airborne transmission. Therefore, cover your mouth and nose with a handkerchief when you cough or sneeze to avoid infecting others. The elderly and children have poor physical constitution and weak resistance, so they are prone to colds.

2. What is the scientific basis for the approach mentioned in Material 2? Talk about your understanding.

The purpose of separating the dishes and chopsticks used by hepatitis A patients from their family members is to isolate the hepatitis A virus left on the dishes and chopsticks by hepatitis A patients from healthy people, so as to prevent healthy people from being infected with hepatitis A.

Tableware in restaurants must be strictly disinfected. This can kill bacteria and viruses on the tableware and prevent customers from contracting infectious diseases.

Three basic links in the spread of infectious diseases:

Source of infection: a person or animal (can be a patient or a carrier) who can spread the pathogen.

Transmission route: The route through which pathogens leave the source of infection and reach healthy people, which can be airborne, food-borne, biological vector-borne, etc.

Susceptible group: People who lack immunity to a certain infectious disease and are susceptible to the disease.

Apply what you learn

1. In a certain family, the elder brother contracted influenza and passed it on to his younger brother, who in turn passed it on to his classmates.

2. After a mosquito bites malaria patient A, it bites patient B again, and patient B also suffers from malaria.

Please analyze:

1. The source of infection that caused my brother’s illness is ( )

2. Before the younger brother was infected, he was ( )

3. The main route of influenza transmission is ( )

4. Mosquitoes play a role in the spread of malaria ( )

Summary of this lesson:

1. The concept of infectious diseases

2. Three basic links in the epidemic of infectious diseases

3. General measures to prevent infectious diseases

5. Which of the following diseases are not infectious diseases ( )

A. Tuberculosis b. Influenza A H1N1

C. Hepatitis B D. Deaf and mute

6. Which of the following organisms is not a pathogen ( )

A. H1N1 virus B． HIV

C. Roundworm D. aphid

7. The pathogens of influenza A and ascariasis belong to ( ) respectively

A. Bacteria and viruses b. Parasites and viruses

C. Viruses and parasites D. viruses and bacteria

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"Infectious Diseases and Their Prevention" PPT Free Download The Epidemic of Infectious Diseases In 1348, a major outbreak of plague occurred in Europe. In just 5 years, the European population decreased by nearly 1/2. In 1918, the global influenza outbreak caused 20 million deaths, including 500,000 deaths in the United States.

"Infectious Diseases and Their Prevention" PPT download:

"Infectious Diseases and Their Prevention" PPT download article source "Political Science Research" 2003 Issue 3 At the end of 2002, SARS appeared in Guangdong Province and spread rapidly to other parts of my country in the following months, developing into a pandemic More serious natural disasters. In some parts...

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"Infectious Diseases and their Prevention" PPT Epidemic Characteristics of Infectious Diseases in Schools (1), Highly Prone to Occurrence Schools are places where people are highly concentrated, and people are in close contact with each other; if the health facilities are not good, the health system is not perfect, and the health habits are not good Okay, this is where infectious diseases are...

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Update Time: 2024-09-03

This template belongs to biology courseware People's Education Edition Biology for Grade 8, Volume 2 industry PPT template

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