Vaccines are produced that will protect Soldiers against diseases that they might encounter in areas of deployment. These include vaccines to prevent dengue fever, malaria, meningitis, cholera, shigellosis, hepatitis A, and HIV. The PBF places compliance, cleanliness, and safety as top priorities in the production process of a vaccine. Once the vaccine is tested for safety, potency, and identity, the vaccine is released for use in approved human clinical studies. Several of the PBF's experimental vaccines have progressed on to advanced clinical testing.