HERPES VIRUS – MORPHOLOGY, RESISTANCE, CLASSIFICATION & DESCRIPTION OF VARIOUS HERPES VIRUSES

INTRODUCTION TO HERPES VIRUS

⇒ HERPES VIRUS is the family of viruses, contains hundreds of viruses, maximum of which infects humans.

⇒ They are characterized by their ability to establish latent infections, enabling the virus to persist indefinitely within the hosts and to undergo periodic reactivation.

MORPHOLOGY OF HERPES VIRUS

⇒ Herpes virus is spherical & enveloped virus containing icosahedral capsid.

⇒ The capsid is composed of 162 capsomers & envelope carries surface glycoprotein spikes.

⇒ Size: 100-200 nm in diameter.

⇒ Genetic Material:- Linear dsDNA.

RESISTANCE SHOWN BY HERPES VIRUS

⇒ Herpes viruses are susceptible to fat solvents like Alcohol, Ether, Chloroform and Bile Salts.

⇒ They are heat labile and must be stored at -70°C

CLASSIFICATION OF HERPES VIRUS

There are about Eight different types of Herpes viruses known whose primary hosts are humans. They have been officially designated ‘Human Herpes virus types 1-8’ but their common names continue to be in general use, except for 6 & 7. These viruses are as follows: –

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INTRODUCTION TO VARICELLA – ZOSTER VIRUS ⇒ In 1889, Von Bokay had suggested that Varicella (Chickenpox) and Herpes Zoster (Shingles) are caused by a single virus, for which it is named Varicella-Zoster virus (VZV). ⇒ Chickenpox is the primary infection in a non-immune individual, whereas herpes zoster is a reactivation ...

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INTRODUCTION TO EPSTEIN-BARR VIRUS (EBV) In 1964, a virus was observed in cultured lymphoma cells by Epstein, Barr & Achong, a new type of Herpesvirus, named the EB virus or Epstein-Barr Virus, specifically affecting cells of the B lymphocyte lineage. INFECTIONS CAUSED BY EPSTEIN-BARR VIRUS ⇒ The source of the ...

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CYTOMEGALOVIRUS (CMV) – INFECTIONS, PATHOGENESIS, CLINICAL FEATURES, LABORATORY DIAGNOSIS, TREATMENT & PROPHYLAXIS

INTRODUCTION TO CYTOMEGALOVIRUSES Cytomegalovirus (CMV) is formerly known as salivary gland virus, are a group of Herpes viruses, characterized by enlargement of infected cells and prominent Intranuclear inclusions. INFECTIONS CAUSED BY CYTOMEGALOVIRUS ⇒ The source of the infection is usually by direct contact with body fluids, such s Saliva, Blood, ...

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SAHIL BATRA

Hi, I’m the Founder and Developer of Paramedics World, a blog truly devoted to Paramedics. I am a Medical Lab Tech, a Web Developer and Bibliophiliac. My greatest hobby is to teach and motivate other peoples to do whatever they wanna do in life.

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