Complex sentence: Kenya's expansive private sector is the main health care provider for the country's poorest people and the largest countrywide, in terms of facilities and personnel, followed by the public and the non-profit sectors.
Split into simpler sentences: Kenya's expansive private sector is the main health care provider for the country's poorest people. The private health sector is also the largest countrywide in terms of facilities and personnel followed by the public and the non-profit sectors.