(1) Herpes, and Poxvirus Flashcards
large group of virus that contains several important human viral pathogens
Herpesviridae
characteristic of HERPESVIRUSES
- Double stranded DNA
- Enveloped
- Icosahedral symmetry
- Linear
One outstanding property of herpesviruses
ability to establish lifelong persistent infections in their hosts
TOF
Herpesviridae undergo periodic reactivation
True
Herpesviridae reactivation happnes mostly to?
Already affected persons of Herpesviridae:
* elderly
* immunosuppressed individual
Herpesviridae
what is the second reactivation from latency of the virus called?
secondary infection or latent infection–latency
TOF
NOT ALL HERPESVIRIDAE have latency site
F (All)
HERPESVIRIDAE
once infected, they will remain ____ on that specific latency site
dormant
HERPESVIRIDAE
oh no i have a herpesviridae but its dormant, but i have low immunity now what will happen to me > __< uwu
REACTIVATED
Herpesviridae
TOF
Infect both warm and cold blooded animals
T
Infections of herpesviridae
mucocutaneous infection and even lifethreatening cancers
herpesviridae have become successful pathogens due to
latency and reactivation
Classification (herpesviridae)
Classification are mainly based on its?
biologic property
what are the subfamillies under herpesviridae
- Alphaherpesviridae
- Betaherpesviridae
- Gammaherpesviridae
Herpesviridae: Subfamilies
Fast-growing virus (when tried to culture)
Alphaherpesviridae
Herpesviridae: Subfamilies
Slow growing virus (on culture)
Betaherpesviridae
Herpesviridae: Subfamilies
what infection does alphaherpesviridae have?
Cytolytic virus
causes lysis on the cell (damage the cell)
Herpesviridae: Subfamilies - Alpha
causes lysis on the cell (damage the cell)
Cytolytic virus
Herpesviridae: Alphaherpesviridae
site of latency
Neuron (CNS)
Herpesviridae: Subfamilies
enumerate the members of alphaherpesviridae
mnemonic: HeHeVading(ka)
- Herpes simplex virus type 1
- Herpes simplex virus type 2
- Varicella-zoster virus
Herpesviridae: Subfamilies
what infection does betaherpesviridae harbor?
Cytomegalic virus
Herpesviridae: Subfamilies - Beta
enlargement of cell
Cytomegalic virus
Herpesviridae: Subfamilies - Beta
Site of latency
SECRETORY GLANDS and KIDNEYS
Herpesviridae: Subfamilies - Beta
enumerate the members
- Cytomegalovirus
- Human herpesvirus type 6
- Human herpesvirus type 7
Herpesviridae: Subfamilies
what infection does gammaherpesviridae harbors?
Lymphoproliferative virus
Herpesviridae: Subfamilies - Beta
spread on lymphoid organs
Lymphoproliferative virus
Herpesviridae: Subfamilies - Gamma
Site of Latency
lymphoid tissues
Herpesviridae: Subfamilies - gamma
enumerate the members
- Epstein- Barr virus
- Kaposis sarcoma associated herpesvirus
Herpes Simplex Virus Type 1 (HSV-1)
Official name
Human Herpes Virus 1
Herpes Simplex Virus Type 1 (HSV-1)
Causes an infection to the?
UPPER PART OF THE BODY MOSTLY THE FACE AND MOUTH
Herpes Simplex Virus Type 1 (HSV-1)
Mode of transmission
Thru contact, usually involving infected saliva, skin lesions and oropharyngeal lesions
HSV-1: Pathogenesis
Transmitted by contact of a susceptible person with an ____ ____
Primary infection
excreting virus
HSV-1: Pathogenesis - Primary Infection
virus enter via?
broken skin or mucous membrane
HSV-1: Pathogenesis - Primary Infection
TOF
Viral replication occurs first at the site of infection
True
HSV-1: Pathogenesis - Primary Infection
location of the initial lesion
Site of infection, characteristic lesion can be seen (produced during primary infeciton)
HSV-1: Pathogenesis - Primary Infection
The virus then spreads locally and short- termed ____ occurs.
Viremia
HSV-1: Pathogenesis - Primary Infection
during the period of viremis, what happens to the virus?
disseminated in the body
HSV-1: Pathogenesis - Primary Infection
virus invades the? and this is where the latency is established
local nerve endings
HSV-1: Pathogenesis
Site of letency
Trigeminal Nerve Root Ganglion
HSV-1: Pathogenesis
TOF
Viral persistence in the infected ganglia lasts for the quarter of life Of the host
False (last for the lifetime of the host)
Reactivates when immunocompromised
HSV-1: Clinical Manifestation
enumerate all clinical manifestation
- Oropharyngeal disease
- Keratoconjunctivitis
- Genital Herpes
- Skin infection
HSV-1: Clinical Manifestation
enumerate the disease under oropharyngeal disease
- Gingivostomatitis
- Herpes labialis
HSV-1: Clinical Manifestation
common manifestation of Gingivostomatitis
Gingivitis
“singaw”
HSV-1: Clinical Manifestation
signs for Gingivitis are noticed when?
immune system lowers and stressed
HSV-1: Clinical Manifestation
Adult manifestations for Gingivostomatitis
Pharyngitis and tonsilitis
HSV-1: Clinical Manifestation
TOF
gingivostomatitis is asymptomatic?
F (nakita mong may mga lesions sa mouth)
HSV-1: Clinical Manifestation
Gingivostomatitis occurs commonly on?
young children (ages 1-5)
HSV-1: Clinical Manifestation
Gingivostomatitis involves the?
- Mouth area
- Mucal (or buccal-check trans) cavity
- gingival mucosa
HSV-1: Clinical Manifestation
Recurrent lesion of the eyes
Keratoconjunctivitis
HSV-1: Clinical Manifestation
keratoconjunctivitis appears as?
dendritic keratitis or corneal ulcer
HSV-1: Clinical Manifestation
TOF
Vesicle on the labia can also be seen
F (eyelids)
hindi eyelids ng puthy
HSV-1: Clinical Manifestation
what are produced with keratoconjunctivitis?
pus
HSV-1: Clinical Manifestation
TOF
there is no recurrent issue for keratoconjunctivitis
F there is, it can result to permanent impairment or blindness
HSV-1: Clinical Manifestation
genital herpes are characteriz by?
vesiculo-ulcerative lesion for male and female
The sores and lesions are very painful
HSV-1: Clinical Manifestation
Skin infection manifestation virus portal of entry are?
Broken skin
HSV-1: Clinical Manifestation
signs and symptoms for skin infection
Herpetic Whitlow - can be seen on fingers
HSV-1: Clinical Manifestation
herpetic whitlow are common with?
healthcare personnel handling the patient without wearing proper PPE
HSV-1: Clinical Manifestation
other variation for skin infection
- Herpes gladiatorum (wrestler)
- Eczema herpeticum (eczema)
- CNS (meningitis and encephalitis)
- Neonatal herpes
Herpes Simplex Virus Type 2 (HSV-2) are also called as?
Genital herpes and Neonatal herpes
Herpes Simplex Virus Type 2 (HSV-2)
may also cause
aseptic meningitis