What virus is known to cause orchitis?

The mumps virus is notably associated with orchitis, which is the inflammation of the testicles. This condition is a well-documented complication of mumps, particularly in postpubertal males. Historically, before the widespread use of the measles, mumps, and rubella (MMR) vaccine, orchitis was a common manifestation of mumps infection.

When the mumps virus infects the body, it can lead to a variety of symptoms, with orchitis occurring in some cases. This typically presents as swelling and pain in the testicles, often accompanied by other systemic symptoms of mumps, such as fever and swelling of the salivary glands.

In contrast, while other options like the measles virus and Chlamydia trachomatis may cause complications related to reproductive health, they are not as directly linked to orchitis as the mumps virus is. Measles primarily affects the respiratory system and does not have a well-established association with orchitis. Likewise, while Chlamydia can lead to other forms of epididymitis or testicular pain, it does not cause orchitis as directly or specifically as mumps does. Chronic urinary tract infections are also not related to orchitis, as they primarily