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In countries where people are frequently infected, a person is considered to have leprosy if they have one of the following two signs: Skin lesion consistent with leprosy and with definite sensory loss. Positive skin smears. Rifampicin, dapsone, clofazimine: Under research [26] Leptospira species Leptospirosis
An infectious disease agent can be transmitted in two ways: as horizontal disease agent transmission from one individual to another in the same generation (peers in the same age group) [3] by either direct contact (licking, touching, biting), or indirect contact through air – cough or sneeze (vectors or fomites that allow the transmission of the agent causing the disease without physical ...
A public health poster: Coughs and sneezes spread diseases. A contagious disease is an infectious disease that can be spread rapidly in several ways, including direct contact, indirect contact, and droplet contact. [1] [2] These diseases are caused by organisms such as parasites, bacteria, fungi, and viruses. While many types of organisms live ...
In these cases, the basic reproduction number of the virus, which is the average number of additional people that a single case will infect without any preventative measures, can be as high as 203.9. [9] [10] Interhuman transmission is a synonym for HHT. [11]
A viral disease (or viral infection) occurs when an organism's body is invaded by pathogenic viruses, and infectious virus particles (virions) attach to and enter susceptible cells. [ 1 ] Examples include the common cold , gastroenteritis , COVID-19 , the flu , and rabies .
A child is said to "catch" cooties through any form of bodily contact, proximity, or touching of an "infected" person or from a person of the opposite sex of the same age. Often the "infected" person is someone who is perceived as different, due to disability, shyness, being of the opposite sex, or having peculiar mannerisms. [13]
After the touching, the sovereign presented the affected person with an angel on a gold-plated coin that was to be hung around the infected person by a ribbon. This was used as a way of warding off the disease. This coin could have weighed as much as 5 grams and was considered a touch piece of great value. [8]
The following outline is provided as an overview of and topical guide to concepts related to infectious diseases in humans.. Infection – transmission, entry/invasion after evading/overcoming defense, establishment, and replication of disease-causing microscopic organisms (pathogens) inside a host organism, and the reaction of host tissues to them and to the toxins they produce.