What are the diseases spread by passing saliva from one person's mouth to another person's mouth
Answers
Infectious Diseases in Saliva
Infectious diseases can be spread through several routes of transmission. Oral transmission refers to the spreading of microbes through saliva or shared foods and drinks. When a person accidentally consumes microbe-contaminated items, such as saliva during kissing, the swallowing action of the tongue wipes the microbes against the back of the throat, allowing the microbe to enter the body. Infections, such as mononucleosis caused by Epstein-Barr virus (EBV), and cytomegalovirus (CMV), are examples of infections spread via oral transmission from virus-containing saliva.
Other infectious microbes that spread through saliva do so by sticking to the inner surface of the cheeks and mouth, the tongue, or teeth. An example is the bacterium Streptococcus, which can cause an array of infections, including gum disease and strep throat.
An important thing to keep in mind is that the surfaces of the respiratory tract (nose, mouth, and throat) are continuous and made up of similar tissues. As a result, microbes that are found in the saliva can generally be found in other parts of the respiratory tract, including the nose and throat. Therefore, even colds and flu (and other respiratory infections) can potentially be spread through the saliva.
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