What are the factors that influences disease transmission?
Six factors are involved in the transmission of communicable diseases: the infectious agent, the reservoir, route of exit, mode of transmission, route of entry, and the susceptible host. A reservoir is a human, another animal, or a non-living thing (such as soil), where the infectious agent normally lives.
What are the disease transmission cycle?
This cycle includes phases of growth, consolidation, change of structure, multiplication/reproduction, spread, and infection of a new host. The combination of these phases is called the development of the pathogen.
What are the four principles of disease transmission?
Principles of Infectious Diseases: Transmission, Diagnosis, Prevention, and Control – PMC.
Who are most important factors in the spread of disease?
Main Factors behind the Global Spread of Diseases
- Global travel. The speed and connectivity offered by air travel have become the most important factors in the global spread of diseases.
- Wars and conflicts.
- Global trade.
- Migration.
- Poverty.
- Medical practices.
What are common methods of transmission of disease?
Different Modes of Transmission of Diseases
| Modes of Disease Transmission | Diseases Caused |
|---|---|
| Spread through blood or body fluids | HIV, Hepatitis |
| Person to person | Gonorrhoea |
| Airborne transmission | Measles, Influenza |
| Contaminated objects | Cold, syphilis |
What is direct transmission of disease?
Direct contact transmission occurs when there is physical contact between an infected person and a susceptible person. Indirect contact transmission occurs when there is no direct human-to-human contact.
How are disease transmitted?
Person to person. Infectious diseases commonly spread through the direct transfer of bacteria, viruses or other germs from one person to another. This can happen when an individual with the bacterium or virus touches, kisses, or coughs or sneezes on someone who isn’t infected.
What are five 5 factors that can increase an individual’s susceptibility to pathogens?
We all have different susceptibility Multiple innate factors (e.g., age, nutritional status, genetics, immune competency, and pre-existing chronic diseases) and external variables (e.g., concurrent drug therapy) influence the overall susceptibility of a person exposed to a virus.
What are the common methods of transmission of diseases Class 9?
Direct Transmission
- Person to Person. When an infected person comes in contact with or exchanges body fluids with a non-infected person.
- Droplet Transmission.
- Spread by skin.
- Spread through body fluids or blood.
- Airborne Transmission.
- Contaminated Objects.
- Vector-Borne Diseases.
- 4.Food and Drinking Water.
What are the factors that cause disease Class 9?
For example, dirty water, contaminated food, improper nourishment, poor standard of living, etc. For Example, Bacteria, Fungi, Viruses, Germs etc For Example Poor diet, Unhealthy lifestyle, Polluted environment etc. includes harmful microbes or microorganism such as bacteria, virus, fungi or protozoa.
What are the agent factors of disease?
The agents that cause disease fall into five groups: viruses, bacteria, fungi, protozoa, and helminths (worms). Protozoa and worms are usually grouped together as parasites, and are the subject of the discipline of parasitology, whereas viruses, bacteria, and fungi are the subject of microbiology.
What are 3 ways in which diseases can be transmitted?
Germs can spread from person to person through:
- the air as droplets or aerosol particles.
- faecal-oral spread.
- blood or other body fluids.
- skin or mucous membrane contact.
- sexual contact.
How are diseases transmitted and preventing transmission?
Prevent the spread of infectious disease
- Immunise against infectious diseases.
- Wash and dry your hands regularly and well.
- Stay at home if you are sick.
- Cover coughs and sneezes.
- Clean surfaces regularly.
- Ventilate your home.
- Prepare food safely.
- Practise safe sex.
What are the dynamics of communicable disease transmission?
DYNAMICS OF DISEASE TRANSMISSION 12. Communicable diseases are transmitted from the reservoir/ source of infection to susceptible host. There are three links in the chain of transmission 1. Reservoir 2. Mode of transmission 3.
How are communicable diseases transmitted from source to susceptible host?
12. Communicable diseases are transmitted from the reservoir/ source of infection to susceptible host. There are three links in the chain of transmission 1. Reservoir 2. Mode of transmission 3. Susceptible host 13. SOURCE OR RESERVOIR MODE OF TRANSMISSION SUSCEPTIBLE HOST 14. 1.
What interrelated factors can determine the spread of infectious disease?
Describe the interrelated factors that can determine the spread of infectious disease, including: mobility of individuals of the affected population. for example, direct contact is less likely to occur than an airborne virus circulating through an office air conditioning system and being exposed to everyone in the office
What factors increase the risk of susceptibility to infectious diseases?
Factors that increase the risk of susceptibility are: age (either very young or very old) underlying medical conditions treatments or invasive devices poor nutrition/general health 1. Incubation Stage- the time between entry of infectious agent in the host and the onset of symptoms.