diphtheria
Diphtheria is a mucosal infection of the upper respiratory tract caused by diphtheria toxin which is a pathogen of diphtheria. Depending on the site of infection, it can be classified into pharynx · tonsillar diphtheria, laryngeal diphtheria, nasal diphtheria, skin diphtheria, ocular conjunctival diphtheria, reproductive organs diphtheria and the like. The conjunctiva, middle ear, etc. of the kidneys, brain, and eyes are sometimes corrupted, and droplets are infected due to a cough of a carrier or the like. Although it is a subclinical infection that does not have symptoms in about 90% of other cases, it will be onset, but if it is preventable by a vaccine and has been vaccinated, it will not cause subclinical infection. Not all diphtheriae produce toxins, only bacteria infected with bacteriophage carrying the diphtheria toxin gene produce diphtheria toxin. ...