| Description: | Depicted here in this 2007 photograph, was Centers for Disease Control microbiologist, and Special Pathogens Branch (SPB) staff member, as he was in the process of counting viral plaques within fixed monolayers of cells, which had been set atop a light box. While inside the organization’s Biosafety Level 4 (BSL-4) laboratory, this activity was taking place, thereby, enabling the laboratorian to titrate a viral stock. He was outfitted in an orange, air-tight, self-contained, positively-pressurized suit, which kept him free of possible contamination. See PHIL 10725 for another view of this activity. The Special Pathogens Branch's (SPB) charter is the study of highly infectious viruses, many of them causing hemorrhagic manifestations in humans. Daily work involves the investigation of viruses such as Ebola hemorrhagic fever, Marburg hemorrhagic fever, Lassa fever, Rift valley fever virus, Crimean-Congo hemorrhagic fever virus, arenaviruses and hantaviruses, and other recently identified and emerging viral diseases. Almost all of these viruses are classified as Biosafety Level 4 (BSL-4) pathogens and as such must be handled in special facilities designed to contain them safely. SPB operates one of the world's few BSL-4 laboratories. In addition, SPB provides technical and research/diagnostic materials to many international laboratories and collaborators. SBP staff members are trained to respond to global disease outbreaks and to provide assistance for disease detection and control measures. |
