The minimum staff pattern for a Maternal and Child Health (MCH) hospital in Ethiopia, as per the guidelines and regulations set by the Ethiopian Drug and Food Administration (EDFA), may include the following positions:

1. Medical Director/Chief Medical Officer: Responsible for overall management and supervision of the hospital.
2. Obstetrician/Gynecologist: Provides specialized care for pregnant women, including prenatal care, delivery, and postnatal care.
3. Pediatrician: Provides medical care for infants, children, and adolescents.
4. General Practitioners/Family Physicians: Provides primary healthcare services to patients of all ages.
5. Nurses: Registered nurses and midwives who provide direct patient care, including antenatal care, labor and delivery assistance, and postnatal care.
6. Nurse-Midwives: Specialized nurses who provide care during pregnancy, childbirth, and postpartum period.
7. Anesthetist: Administers anesthesia during surgeries and other medical procedures.
8. Laboratory Technicians: Conducts various laboratory tests and analyses.
9. Pharmacists: Dispenses medications and provides pharmaceutical advice.
10. Radiographers: Perform diagnostic imaging procedures, such as X-rays and ultrasounds.
11. Health Information Management Officer: Responsible for managing patient records and health information systems.
12. Administrative Staff: Includes receptionists, clerks, and other administrative personnel who handle patient registration, scheduling, and general administrative tasks.
13. Support Staff: Includes cleaners, security personnel, and maintenance staff.

Please note that this is a general outline and the specific staff pattern may vary depending on the size and scope of the MCH hospital. Additionally, the guidelines and regulations may be subject to updates and revisions.