"Prevention of Infectious Diseases" PPT

Description

"Prevention of Infectious Diseases" PPT

Part One: Situation Import

Question:

1. Which diseases in the table are contagious?

2. Which diseases are not contagious?

3. What diseases can be prevented by vaccination? Why?

4. Are there any other questions you can ask?

learning target

1. Understand infectious diseases and their characteristics, and recognize pathogens;

2. List common infectious diseases and name the pathogens, transmission routes and preventive measures of infectious diseases such as ascariasis, tuberculosis, and viral hepatitis.

I observe and explore

Activity: Observe roundworm eggs

Purpose:

1. Understand the pathogen - roundworm eggs;

2. Learn how to check for roundworm eggs.

Method steps:

Place a drop of 0.9% saline in the center of a clean glass slide.

Use a clean toothpick to pick up a little feces, spread it evenly in saline, and cover it with a coverslip.

Look under a low-power microscope to find roundworm eggs.

Prevention of infectious diseases PPT, part 2 content: course exploration

Explore theme one

Overview of Infectious Diseases

1. Concept: Infectious diseases are diseases caused by pathogens and can be transmitted between people or between people and animals.

2. Characteristics of infectious diseases: contagiousness and epidemicness

3. The concept of pathogens

All bacteria, fungi, viruses, parasites, etc. that can cause illness in humans and animals are pathogens. Roundworm eggs are the causative agent of ascariasis.

Others such as Mycobacterium tuberculosis, influenza virus, SARS virus, pinworm eggs, and HIV are all pathogens.

Explore theme two

1. Basic links

2. Preventive measures

Control sources of infection

To prevent infectious diseases, we need to control the source of infection. It is necessary to strengthen the management of patients with infectious diseases, and achieve early detection, early reporting, early diagnosis, early isolation and thorough treatment of patients with acute infectious diseases to prevent the spread of pathogens. In addition, animals suffering from infectious diseases must also be dealt with promptly.

Cut off transmission routes

Cutting off transmission routes is the main method to control the spread of infectious diseases.

Pay attention to food hygiene, strengthen the management of water sources and feces, carry out some necessary disinfection work, eliminate vector organisms that spread diseases, and reduce the chance of pathogens infecting healthy people.

Protect vulnerable groups

After an infectious disease is discovered, attention should be paid to protecting susceptible persons and reducing or preventing the chances of contact between susceptible persons and the source of infection. Susceptible people should develop good hygiene habits, actively participate in physical exercise, strengthen their physical fitness, and improve disease resistance. Relevant vaccinations should also be injected regularly.

Explore theme three

1. Ascariasis: It is a common parasitic disease of the digestive tract.

Symptoms: anorexia, malnutrition and anemia, abdominal pain in severe cases.

Source of infection: People who have fertilized roundworm eggs in their feces.

Prevention methods: Pay attention to food hygiene, personal hygiene and environmental hygiene. Don’t defecate in the open, wash your hands before meals and after using the toilet, don’t eat raw vegetables and fruits without washing, don’t drink raw water, treat feces harmlessly, and eliminate flies.

2. Tuberculosis: a chronic respiratory infectious disease.

Symptoms: general malaise, fatigue, cough, sometimes blood in the sputum or hemoptysis, often low-grade fever in the afternoon, and flushed cheeks.

Transmission route: droplets, dust,

Susceptible groups: adolescents

Prevention methods: Vaccination with BCG vaccine on time, regular physical examination, early detection, timely isolation and treatment; develop good hygiene habits and do not spit everywhere; ventilate the room regularly and wet clean; develop a reasonable work and rest system, strengthen physical exercise, and increase nutrition appropriately , improve disease resistance

3. Viral hepatitis: caused by a variety of hepatitis viruses.

Symptoms: loss of appetite, nausea, upper abdominal discomfort or pain in the liver area, or jaundice and fever.

Transmission route: Mainly through food and drink

Prevention methods: Develop good hygiene habits, strictly control the "mouth" and "hands" as a medium, improve food hygiene, protect water sources, and disinfect drinking water and tableware; strengthen the supervision of blood products Management, strict disinfection of blood-borne contaminants, and timely vaccination of hepatitis virus vaccines.

Prevention of infectious diseases PPT, part three: training to meet standards

1. (2011·Huai Chemistry Examination) Which of the following diseases are infectious diseases ( )

A. Nephritis B. Appendicitis

C. Anemia D. Tuberculosis

2. (2011·Heze Academic Examination) After the major earthquake in Japan, chemical defense troops sprayed water in the disaster area

Sprinkling a large amount of disinfectant, from the perspective of preventing infectious diseases, it should be classified as ( )

A. Control the source of infection B. Cut off the transmission route

C. Protect susceptible groups D. Vaccination

3. The characteristics of infectious diseases are ( )

A. Contagious and epidemic, with high mortality rate

B. Contagious, but insignificant

C. Some are caused by pathogens, and some are caused by physical weakness.

D. They are all caused by pathogens and are contagious and epidemic.

Keywords: Beijing Normal University Edition Biology PPT courseware for seventh grade volume 2 free download, prevention of infectious diseases PPT download, .PPT format;

For more information about the PPT courseware "Live Healthy and Prevent Infectious Diseases", please click the "Live Healthy and Prevent Infectious Diseases" ppt tag.

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Update Time: 2024-06-27

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