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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 ...
Inhalation of these pathogens affects the respiratory system and can then spread to the rest of the body. Sinus congestion, coughing and sore throats are examples of inflammation of the upper respiratory airway. Air pollution plays a significant role in airborne diseases. Pollutants can influence lung function by increasing air way inflammation ...
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.
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.
These germs can spread year-round, but food-centric holidays like Thanksgiving present many opportunities for people to get sick. Here's what to know: Common causes of illnesses on Thanksgiving
800-290-4726 more ways to reach us. Sign in. Mail. 24/7 Help. ... People can spread bacteria or virus from their mouth or nose and then shake someone’s hand or touch a surface, leaving a ...
An individual can acquire this infection from consuming risky foods or drinks, or by consuming foods or drinks prepared by an infected individual. Those who recover from this infection can still carry the bacteria in their cells, and therefore be asymptomatic. [16]
800-290-4726 more ways to reach us. Mail. ... of passengers when you're contagious with Norovirus or some other airborne illness is never a good idea because germs can spread quickly in a self ...