Thus far in the history of the United States there been three Presidential impeachment proceedings -- in 1868 against President Andrew Johnson for his removal of Secretary of War Edwin Stanton in violation of the Tenure of Office Act - 1974 against President Richard Richard Nixon for the Watergate coverup (106 years after Johnson) - 1998-99 against ...
Medical entomology. The discipline of medical entomology, or public health entomology, and also veterinary entomology is focused upon insects and arthropods that impact human health. Veterinary entomology is included in this category, because many animal diseases can jump species and become a human health threat, for example, bovine encephalitis.
Environmental Public Health Tracking. Environmental Public Health Tracking is the ongoing collection, integration, analysis, interpretation, and dissemination of data on environmental hazards, exposures to those hazards, and health effects that may be related to the exposures.