Tag: epidemiology
Rickettsia rickettsii: Pathophysiology and Rocky Mountain Spotted Fever
Rickettsia rickettsii is a specialized gram-negative bacterium recognized as the causative agent of Rocky Mountain Spotted Fever (RMSF). As an obligate intracellular pathogen, it must reside within the cytoplasm of a host cell to survive, replicate, and eventually transition to a new host via an arthropod vector. Microscopic visualization, as seen in tick hemolymph, provides a window into the initial stages of infection before the pathogen is transmitted to the human bloodstream.
Ebolavirus Morphology and Pathogenesis: A Microscopic Analysis of the Filovirus Family
This transmission electron micrograph reveals the distinctive filamentous structure of the Ebolavirus, a highly pathogenic member of the Filoviridae family. By examining its physical morphology, medical professionals gain insight into how this deadly virus operates, identifying key features that contribute to its ability to cause severe hemorrhagic fever in humans and nonhuman primates.
Microscopic View of the Coronavirus Family: Morphology and Clinical Impact
This transmission electron micrograph provides a detailed view of virions from the Coronavirus family, a group of RNA viruses responsible for a spectrum of human respiratory illnesses ranging from the common cold to severe acute respiratory syndrome (SARS). The image highlights the distinctive structural features, particularly the halo of surface proteins, that define this viral classification and facilitate their mechanism of infection within the human host.
Anencephaly in Stillborn Infants: X-ray Radiographic Features and Clinical Implications
The X-ray provides medical professionals with valuable insights into the skeletal manifestations of this condition, showing the absent cranial vault and other associated skeletal features that accompany this profound neural development disorder.
