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The fleas that transmit the disease only directly infect humans when the rat population in the area is wiped out from a mass infection. [16] Furthermore, in areas with a large population of rats, the animals can harbor low levels of the plague infection without causing human outbreaks. [15]
Yersinia pestis (Y. pestis; formerly Pasteurella pestis) is a gram-negative, non-motile, coccobacillus bacterium without spores that is related to both Yersinia enterocolitica and Yersinia pseudotuberculosis, the pathogen from which Y. pestis evolved [1] [2] and responsible for the Far East scarlet-like fever.
The exposure to a flea bite from an infected flea may cause bubonic plague in humans that could develop into the septicemic plague. Cats and dogs were also susceptible to bites from infected fleas. These cats and dogs could then expose humans to the plague when the animal brings those infected fleas around people. [4]
The most infamous flea-to-human transmitted disease is the bubonic plague, which was caused by the bacterium Yersinia pestis. The plague, fevers, tularemia: The diseases fleas can carry and how to ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 17 December 2024. Disease caused by Yersinia pestis bacterium This article is about the disease caused by Yersinia pestis. For other uses, see Plague. Medical condition Plague Yersinia pestis seen at 200× magnification with a fluorescent label. Specialty Infectious disease Symptoms Fever, weakness ...
Several possible causes have been advanced for the Black Death; the most prevalent is the bubonic plague theory. [3] Efficient transmission of Yersinia pestis is generally thought to occur only through the bites of fleas whose mid guts become obstructed by replicating Y. pestis several days after feeding on
The bacteria can penetrate into the body through damaged skin, mucous membranes, and inhalation. Humans are most often infected by tick/deer fly bite or through handling an infected animal. Ingesting infected water, soil, or food can also cause infection.
Fleas and ticks carry a range of diseases, including plague and Lyme disease, which can affect animals and their owners. Pets can also develop allergies or sensitivities to the bites, and they can ...