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A contagious disease is an infectious disease that is readily spread (that is, communicated) by transmission of a pathogen through contact (direct or indirect) with an infected person. [1] A disease is often known to be contagious before medical science discovers its causative agent. Koch's postulates, which were published at the end of the ...
A disease is a particular abnormal condition that adversely affects the structure or function of all or part of an organism and is not immediately due to any external injury. [ 1 ][ 2 ] Diseases are often known to be medical conditions that are associated with specific signs and symptoms.
Infectious diseases (ID), also known as infectiology, is a medical specialty dealing with the diagnosis and treatment of infections. An infectious diseases specialist's practice consists of managing nosocomial (healthcare-acquired) infections or community-acquired infections. [1] An ID specialist investigates and determines the cause of a ...
The eradication of infectious diseases is the reduction of the prevalence of an infectious disease in the global host population to zero. [1] Two infectious diseases have successfully been eradicated: smallpox in humans, and rinderpest in ruminants. There are four ongoing programs, targeting the human diseases poliomyelitis (polio), yaws ...
oral candidiasis, the person's mouth for white patches and irritation. vaginal candidiasis, vaginal itching or soreness, pain during sexual intercourse. Antifungal medications. No. Intestinal disease by Capillaria philippinensis, hepatic disease by Capillaria hepatica and pulmonary disease by Capillaria aerophila.
Influenza, commonly known as " the flu " or just " flu ", is an infectious disease caused by influenza viruses. Symptoms range from mild to severe and often include fever, runny nose, sore throat, muscle pain, headache, coughing, and fatigue. These symptoms begin one to four (typically two) days after exposure to the virus and last for about ...
Zoonosis. A zoonosis (/ zoʊˈɒnəsɪs, ˌzoʊəˈnoʊsɪs / ⓘ; [1] plural zoonoses) or zoonotic disease is an infectious disease of humans caused by a pathogen (an infectious agent, such as a bacterium, virus, parasite, or prion) that can jump from a non-human (usually a vertebrate) to a human and vice versa. [1][2][3] Major modern diseases ...
The term pathogen came into use in the 1880s. [2][3] Typically, the term pathogen is used to describe an infectious microorganism or agent, such as a virus, bacterium, protozoan, prion, viroid, or fungus. [4][5][6] Small animals, such as helminths and insects, can also cause or transmit disease. However, these animals are usually referred to as ...