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A representation by Robert Seymour of the cholera epidemic depicts the spread of the disease in the form of poisonous air.. The miasma theory was the predominant theory of disease transmission before the germ theory took hold towards the end of the 19th century; it is no longer accepted as a correct explanation for disease by the scientific community.
Some virulent bacteria produce special proteins that allow them to colonize parts of the host body. Helicobacter pylori is able to survive in the acidic environment of the human stomach by producing the enzyme urease. Colonization of the stomach lining by this bacterium can lead to gastric ulcers and cancer.
The Convention for the Protection of Human Rights and Dignity of the Human Being with regard to the Application of Biology and Medicine, otherwise known as the European Convention on Bioethics or the European Bioethics Convention, is an international instrument aiming to prohibit the misuse of innovations in biomedicine and to protect human dignity.
Chlamydia, an STI that affects both men and women, can also be asymptomatic in most individuals. Although the infection may not yield any obvious symptoms, it can still damage the reproductive system. If the infection goes unnoticed for a long time, infected individuals are at risk of developing pelvic inflammatory disease (PID). Like chlamydia ...
Ecosocial Theory could also help us examine how these social forces and pathways become embodied and incorporated into the physiological outcome of obesity over the lifecourse, for example by looking at dietary patterns during pregnancy and how this affects risk of obesity to the fetus as it ages and grows into an adult with an altered ...
An infection is the invasion of tissues by pathogens, their multiplication, and the reaction of host tissues to the infectious agent and the toxins they produce. [1] An infectious disease, also known as a transmissible disease or communicable disease, is an illness resulting from an infection.
The rising rate of colon cancer in young people can't be caused by diet alone, doctors say. Microplastics, sleep, and antibiotics may play a role. ... In the US, young colon cancer rates have been ...
Factors which have been identified as impeding the identification of pathogens include the following: 1. Lack of animal models: Experimental infection in animals has been used as a criterion to demonstrate a disease-causing ability, but for some pathogens (such as Vibrio cholerae, which causes disease only in humans), animal models do not exist.