This part is clear to me, it refers to biohazard suits used by every physician and nurse who go into a "hot zone"--an area with a deadly epidemic raging. Marburg is EXTREMELY contagious, level 5 biohazard stuff, and about 99 percent fatal.
Nice to see someone is thinking. But I must correct you on fatality rates. Ebola Zaire is 90% fatal, Ebola Sudan about 60%, Marburg only about 25%, and Ebola Reston thus far only affects primates.