This is a large set of PowerPoint slides in PDF format. The slides describe specific tests Level A microbiology laboratories should perform to rule out a suspected organism or refer it to another laboratory. Biological agents covered include Francisella tularensis (Tularemia), Yersinia pestis (Plague), Variola virus (Smallpox), Hemorrhagic Fever Viruses (Ebola and Marburg), Brucella spp. (Brucellosis), Clostridium botulinum (Botulism), and Bacillus antracis (Anthrax). Each agent presented contains information on the types of tests to be performed to determine strain and images showing the disease on humans or in laboratory conditions.