Category archives for Virology

Clinical manifestations of Rabies

Five general stages of rabies are recognized in humans: a) Incubation b) Prodrome c) Acute neurologic period d) Coma and e) Death (or, very rarely, recovery). Incubation Incubation period in humans is usually 1-3 months but ranging from as few as 5 days to longer than 2 years after initial exposure, is more variable than […]

Rabies virus: Structure, Pathogenesis and Modes of transmission

Rabies is caused by Rabies virus. It belongs to Rhabdoviridae family. The viruses included in this family are rod shaped, enveloped, single stranded RNA virus. They infect mammals, reptiles, birds, fishes, insects and plants. Rhabdoviruses infecting mammals are included in two genera: Lyssavirus-  Rabies, Lagos bat virus, Mokola, Duvenhage, Australian bat Vesiculovirus- Vesicular stomatitis virus […]

FAQs on Ebola (Signs and Symptoms, transmission and Laboratory diagnosis)

What is Ebola? Ebola, previously known as Ebola hemorrhagic fever, is a severe, most often fatal disease in humans and nonhuman primates. Ebola is a rare and deadly disease caused by infection with a virus of the family Filoviridae, genus Ebolavirus.  These are filamentous, enveloped particles with a single stranded RNA genome( approx. 19 kb […]