Some 800 km to the east is East Malaysia ( Malaysia Timur ), which occupies the northern third of the island of Borneo , shared with Indonesia and tiny Brunei . Partly covered in impenetrable jungle where headhunters roam (on GSM networks if nothing else), East Malaysia is rich in natural resources but very much Malaysia's hinterland for industry, and focused more on mass than individual tourism. Both East and West Malaysia have been subjected to vast logging activities in the last decades, however, and much of its rainforests have been transformed into palm oil plantations, especially in the flatter areas. Areas with pristine rainforest do remain, though, especially inland where the terrain is more mountainous.
It is widely suspected that the anaerobic bacterial species Propionibacterium acnes ( P. acnes ) contributes to the development of acne, but its exact role is not well understood.  There are specific sub-strains of P. acnes associated with normal skin, and moderate or severe inflammatory acne.  It is unclear whether these undesirable strains evolve on-site or are acquired, or possibly both depending on the person. These strains have the capability of changing, perpetuating, or adapting to the abnormal cycle of inflammation, oil production, and inadequate sloughing of dead skin cells from acne pores. Infection with the parasitic mite Demodex is associated with the development of acne.   It is unclear whether eradication of the mite improves acne.