Laryngitis - Causes
In the vast majority of cases, laryngitis is caused by a virus. The virus is often the same one that causes a common cold or influenza (the flu; see influenza entry). In very rare cases, the disease is caused by a bacterium, such as the one that also causes tuberculosis (see tuberculosis entry). In people with weakened immune systems, such as those with AIDS (see AIDS entry), laryngitis can be caused by a fungus.
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