Describe The Causes Of Infection
The causes of infection.
Diseases can be classified as genetic, metabolic, or infectious. Infectious diseases are caused by bacteria, viruses, fungi and parasites that use our body as a host for reproduction and cause illness.
Bacteria, viruses, fungi and parasites. These are all microorganisms which cause infection, yet they are all different in structure, required environment and conditions needed to thrive and multiply. Bacteria is a single celled organism. It’s shape and size can vary greatly from one type of bacteria to another, but its general structure is that of a simple cellular one with a nucleus that lacks a membrane.They can thrive in almost any environment and can be found within almost any substance/surface, also within …show more content…
However, they do not have chlorophyll to make their own food like plant do, so they get their nutrition by acting as parasites or by breaking down remains of dead plants or animals. Some fungi are poisonous, but some are beneficial. For example, one type of fungi is the source of Penicillin, and others are essential in the making of food products. Fungal diseases are called mycoses. These include Aspergillosis (infection of sinuses and lungs), Coccidioidomycosis (may cause cough, chest pain and shortness of breath), and Blastomycosis (skin and pulmonary …show more content…
Respiratory infections are generally transmitted by aerosolized droplets, such as a cough or a sneeze. Gastrointestinal infections are usually spread by the ingestion of infected food and water, which may become infected after an infected individual has had contact with it. Sexually transmitted infections are transmitted through bodily fluids, and usually contracted through sexual activity. Transmission of infection may also involve a vector. These may be either mechanical, where they pick up the infection on the outside of their body and pass it on in a passive manner, such as a housefly landing on faeces and then food, therefore contaminating it with bacteria, or biological, where they harbour pathogens within their body and deliver them to new hosts in an active manner, such as an insect bite. This is how malaria is transmitted. Vectors are usually required in the life cycle of a pathogen. A common strategy used to control vector borne infectious diseases is to interrupt the life cycle of a pathogen by killing the vector, and therefore stopping
Diseases can be classified as genetic, metabolic, or infectious. Infectious diseases are caused by bacteria, viruses, fungi and parasites that use our body as a host for reproduction and cause illness.
Bacteria, viruses, fungi and parasites. These are all microorganisms which cause infection, yet they are all different in structure, required environment and conditions needed to thrive and multiply. Bacteria is a single celled organism. It’s shape and size can vary greatly from one type of bacteria to another, but its general structure is that of a simple cellular one with a nucleus that lacks a membrane.They can thrive in almost any environment and can be found within almost any substance/surface, also within …show more content…
However, they do not have chlorophyll to make their own food like plant do, so they get their nutrition by acting as parasites or by breaking down remains of dead plants or animals. Some fungi are poisonous, but some are beneficial. For example, one type of fungi is the source of Penicillin, and others are essential in the making of food products. Fungal diseases are called mycoses. These include Aspergillosis (infection of sinuses and lungs), Coccidioidomycosis (may cause cough, chest pain and shortness of breath), and Blastomycosis (skin and pulmonary …show more content…
Respiratory infections are generally transmitted by aerosolized droplets, such as a cough or a sneeze. Gastrointestinal infections are usually spread by the ingestion of infected food and water, which may become infected after an infected individual has had contact with it. Sexually transmitted infections are transmitted through bodily fluids, and usually contracted through sexual activity. Transmission of infection may also involve a vector. These may be either mechanical, where they pick up the infection on the outside of their body and pass it on in a passive manner, such as a housefly landing on faeces and then food, therefore contaminating it with bacteria, or biological, where they harbour pathogens within their body and deliver them to new hosts in an active manner, such as an insect bite. This is how malaria is transmitted. Vectors are usually required in the life cycle of a pathogen. A common strategy used to control vector borne infectious diseases is to interrupt the life cycle of a pathogen by killing the vector, and therefore stopping