Communicable diseases are also known as infectious diseases. They spread from one person to another, that is, a healthy person may catch it from a patient.
You are probably thinking that a communicable disease is communicated either by air or touch. Well, these are two modes of spread but there are others too. For example, a disease is communicated by food and water too. In other words, communicable diseases spread through air, water, food and contact. Communicable diseases come into existence due to very small organisms called germs and parasites. These germs are present everywhere- in air, water, soil, etc. When germs enter a healthy body through infected food and water, air, contact or insects, they multiply and upset the normal functioning of the body, thus, producing the symptoms of communicable diseases.
Types of Communicable Diseases
Communicable diseases classified as either primary pathogens or as opportunistic pathogens according to the status of host defenses. Primary pathogens cause disease as a result of their presence or activity within the normal, healthy host, and their intrinsic virulence (the severity of the disease they cause) is, in part, a necessary consequence of their require to reproduce and spread. Many of the most common primary pathogens of humans only infect humans, however many serious diseases are caused by organisms acquired from the environment or which infect non-human hosts.
Organisms which cause an infectious disease in a host with depressed resistance are classified as opportunistic pathogens. Opportunistic disease may be originated by microbes that are ordinarily in contact with the host, such as pathogenic bacteria or fungi in the gastrointestinal or the upper respiratory tract, and they may also result from (otherwise innocuous) microbes acquired from other hosts (as in Clostridium difficile colitis) or from the environment as a result of traumatic introduction (as in surgical wound infections or compound fractures).
Communicable Diseases Treatment
The treatment of communicable disease occasionally involves identifying an infectious agent directly or indirectly. Minor communicable diseases such as chicken pox, filarial, respiratory system infections and diarrhea diseases are treated by their clinical presentation. Conclusions about the cause of the disease are based upon the likelihood that a patient came in contact with a particular agent, the presence of a microbe in a community, and other epidemiological considerations. Given adequate effort, all familiar infectious agents can be particularly identified. The benefits of identification, however, are often greatly outweighed by the cost, as often there is no specific communicable diseases treatment, the cause is obvious, or the outcome of an infection is benign.
List of Communicable Diseases :
- Mosquito-borne diseases
- Dengue Fever
- Hospital-acquired infections
- Chicken Pox