As staff develop the clinics in Nsanje boma , or town centre , the plan is for MSF to expand these dedicated services throughout the district to keep sex workers like Isabella healthy , by helping them to stay on consistent ARV treatment and to decrease the transmission of HIV overall .
The above sentence is very complicated. Please provide me a simplified synonymous version consisting of multiple sentences:
In addition , MSF is already planning to extend this system , which is being developed in clinics in Nsanje , to the entire district . MSF thus wants to preserve the health of sex workers like Isabella by motivating them to take ARV treatment and reducing the rate of HIV transmission .