The three reservoirs of trachoma are:
1. Human reservoir: Trachoma is primarily transmitted through direct contact with the discharge from the eyes or nose of infected individuals. Therefore, humans infected with trachoma act as a reservoir for the disease.
2. Fomite reservoir: Trachoma can also be transmitted indirectly through contaminated objects, known as fomites. These can include towels, bedding, or clothing that have come into contact with the discharge from infected individuals. These fomites can serve as a reservoir for the bacteria that cause trachoma.
3. Fly reservoir: Certain species of flies, particularly the Musca sorbens fly, can act as a reservoir for trachoma. These flies can come into contact with the discharge from infected individuals and then transmit the bacteria to others when they land on their faces or eyes.