Hepatitis B Virus- Structure, Epidemiology, Symptoms, Pathogenesis, Diagnosis, Treatment and Vaccines

Hepatitis B Virus

The hepatitis B virus is a DNA virus belonging to the Hepadnaviridae family causing hepatitis B in humans.  Hepatitis B is a viral infection that attacks the liver and can cause both acute and chronic disease. Group: Group VII (dsDNA-RT) Family: Hepadnaviridae Genus: Orthohepadnavirus Species: Hepatitis B virus Structure of Hepatitis B Virus   Three …

Read moreHepatitis B Virus- Structure, Epidemiology, Symptoms, Pathogenesis, Diagnosis, Treatment and Vaccines

Zika Virus- Structure, Genome, Symptoms, Transmission, Pathogenesis, Diagnosis

Zika-Virus--Structure,-Genome,-Symptoms,-Transmission,-Pathogenesis,-Diagnosis

Zika Virus (ZIKV) is mosquito-borne emerging flavivirus which was first identified in Zika Forest of Uganda in 1947 in rhesus monkeys. It was later identified in humans in 1968 for the first time in Nigeria. Different outbreaks of Zika virus disease have been recorded in Africa, the Americas, Asia and the Pacific. Its infection is caused by the bite of …

Read moreZika Virus- Structure, Genome, Symptoms, Transmission, Pathogenesis, Diagnosis

Differences Between Chickenpox and Smallpox

Differences Between Chickenpox and Smallpox

S.N Characteristics Chickenpox Smallpox 1 Causative Agent Varicella Zoster Virus (Herpes Virus) Variola virus (Pox Virus) 2 Incubation period 14-21 days 7-17 days 3 Severity Chickenpox is less deadly comparing to small pox. Smallpox is deadly severe comparing to chicken pox. 4 Lesions Lesions first appear on the face or trunk. Lesions first appear in …

Read moreDifferences Between Chickenpox and Smallpox

Differences Between Antigenic Shift and Antigenic Drift

Antigenic Shift and Antigenic Drift

Influenza Virus are remarkable because of the frequent antigenic change that occurs in HA (hemagglutinin) or NA (neuraminidase). The two surface antigens of influenza undergo antigenic variation independent of each other. They are Antigenic Shift and Antigenic Drift. Some of the Differences Between Antigenic Shift and Antigenic Drift are as follows: S.N. Antigenic Shift Antigenic …

Read moreDifferences Between Antigenic Shift and Antigenic Drift

Replication of Ebola Virus

Replication of Ebola Virus

Ebola Virus do not replicate through any kind of cell division; rather, they use a combination of host and virally encoded enzymes, alongside host cell structures, to produce multiple copies of viruses. These then self-assemble into viral macromolecular structures in the host cell. The virus completes a set of steps when infecting each individual cell. …

Read moreReplication of Ebola Virus

Structure of Ebola Virus

Ebola Virus Structure

Ebola Virus are generally approximately 80 nm in diameter, 970 nm long. They are cylindrical/tubular, and contain viral envelope, matrix, and nucleocapsid components. The virus generally appears in a long, filamentous form, but it can also be “U-shaped,” in the shape of a “6” (the “shepherd’s crook” appearance), or even circular. They have a virally …

Read moreStructure of Ebola Virus