What are the modes of transmission of infection?
Direct transmission occurs when a pathogen. Indirect transmission occurs when an inanimate object serves as a temporary reservoir for the infectious agent. For example, you could become infected with HBV if you come into contact with equipment that has dried infectious blood on it.
Infectious diseases are transmitted from person to person by direct or indirect contact. Certain types of viruses, bacteria, parasites, and fungi can all cause infectious disease. Malaria, measles, and respiratory illnesses are examples of infectious diseases.
- Figure 1.19. Description: The chain of infection has 3 main parts. A reservoir such as a human and an agent such as an amoeba. The mode of transmission can include direct contact, droplets, a vector such as a mosquito, a vehicle such as food, or the airborne route.
- There are two types of contact transmission: direct and indirect. 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.
- These can be bacteria, fungi, or viruses, but they are all transmitted through airborne contact. In most cases, an airborne disease is contracted when someone breathes in infected air. And a person also spreads the disease through their breath, particularly by sneezing and coughing, and through phlegm.
Person to person. A common way for infectious diseases to spread is through the direct transfer of bacteria, viruses or other germs from one person to another. This can occur when an individual with the bacterium or virus touches, kisses, or coughs or sneezes on someone who isn't infected.
- How these diseases spread depends on the specific disease or infectious agent. Some ways in which communicable diseases spread are by: physical contact with an infected person, such as through touch (staphylococcus), sexual intercourse (gonorrhea, HIV), fecal/oral transmission (hepatitis A), or droplets (influenza, TB)
- Ways you can reduce or slow the spread of infections include:
- Get the appropriate vaccine.
- Wash your hands frequently.
- Stay home if you are sick (so you do not spread the illness to other people).
- Use a tissue, or cough and sneeze into your arm, not your hand.
- Use single-use tissues.
- Fomite transmission occurs when viruses or bacteria that remain on surfaces cause infections. This is as opposed to diseases being transmitted from person to person, in the air, in infected water, or in another manner. The risk of fomite transmission varies depending on a number of factors.
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.
- Learn, practice, and teach healthy habits.
- #1 Handle & Prepare Food Safely. Food can carry germs.
- #2 Wash Hands Often.
- #3 Clean & Disinfect Commonly Used Surfaces.
- #4 Cough and Sneeze into a Tissue or Your Sleeve.
- #5 Don't Share Personal Items.
- #6 Get Vaccinated.
- #7 Avoid Touching Wild Animals.
- #8 Stay Home When Sick.
- Yes, you can catch herpes just from kissing someone on the mouth. And while experts believe the risk of catching HIV (the virus that causes AIDS) from kissing is low, someone who has a cut or sore in the mouth has a chance of infection during open-mouthed kissing.
- Infectious diseases are caused by microscopic germs (such as bacteria or viruses) that get into the body and cause problems. Some — but not all — infectious diseases spread directly from one person to another. Infectious diseases that spread from person to person are said to be contagious.
Updated: 25th November 2019