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Infections are generally caused by bacteria or viruses. Learn about infectious and childhood diseases, animal to human diseases and prevention.

Middle ear infections often happen during or after a child has a cold.

It is estimated that around four out of five children will experience a middle ear infection at least once.

A chest infection affects your lungs, either in the larger airways (bronchitis) or in the smaller air sacs (pneumonia).

All about HIV and AIDS including HIV transmission, how HIV spreads, prevention, symptoms, treatment, testing, letting sexual partners know, reducing stigma and where to get help.

Many bacterial infections can be treated with antibiotics, but they are useless against viral infections.

STIs (also called sexually transmissible diseases or STDs) information and resources. Including symptoms, how to prevent STIs, getting tested and treatment.

The most common infections for people with lupus include those of the respiratory tract, skin and urinary system.

Urinary tract infections (UTIs) can target the urethra, bladder or kidneys.

People with HIV or hepatitis B or C participate in a wide range of sports without restrictions, and the risk of transmission to another player is extremely small.