Complex sentence: Hospital workers, who worked closely with the highly contagious body fluids of the victims, were especially vulnerable to contracting the virus; in August 2014, the WHO reported that ten percent of the dead had been healthcare workers.
Split into simpler sentences: Hospital workers, who worked closely with the highly contagious body fluids of the diseased, were especially vulnerable to catching the disease. In August 2014, the WHO reported that ten percent of the dead had been healthcare workers.