There are four main types of infections: bacterial, viral, fungal, and parasitic.
Bacterial infections are caused by bacteria that enter the body, multiply, and cause disease. These infections can be mild, such as a simple ear infection, or more serious, such as pneumonia or meningitis. Common bacterial infections include strep throat, urinary tract infections, and bacterial pneumonia. Antibiotics are usually used to treat bacterial infections.
Viral infections are caused by viruses that infect cells in the body and disrupt the normal functioning of the body. Common viral infections include the flu, the common cold, and HIV/AIDS. Viral infections can be treated with antiviral medications, but many viruses have no cure.
Fungal infections are caused by fungi that enter the body and cause infection. Common fungal infections include athlete’s foot, ringworm, and yeast infections. Fungal infections can be treated with antifungal medications.
Parasitic infections are caused by parasites that enter the body and cause disease. Common parasitic infections include malaria, hookworm, and giardiasis. Parasitic infections can be treated with antiparasitic medications.