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Poxviruses
1. (Poxviruses (molluscum contagiosum
All disease caused by poxviruses
including smallpox and cowpox, include
skin lesions. Pox refers to pus-filled
sacs.
2. (Poxviruses (molluscum contagiosum
Clinical features
Spread from person to person,
Infecting mucosal cells in the upper respiratory
tract without producing symptoms, spread to the
regional lymph nodes.
(molluscum contagiosum ) lesions of this small
copper colored watery papules that occurs on the
trunk, arms and face.
5. .Herpes viruses
Nearly 100 herpes viruses are known. They
are named after the spreading (herpetic)
appearance of cold sores. Species of human
herpes viruses (HHV) include those that
cause cold sores (HHV1 and HHV2),
chickenpox (HHV3 or varicella-zoster
viruses), and infections mononucleosis
(HHV4 or Epstein-Barr virus).
6. Herpes viruses. (H. simplex; zoster; B cell
…(lymphomas
H. simplex viruses: skin – eye oral
Oral infection:
Acute febrile gingivastomatitis in pre-school
children.
Vasicular lesions ulcerate rapidly and
present in the form of mouthand the tongue.
Gingivitis usually present
Treatment
Specific antiviral therapy
7. Corona viruses
Upper respiratory tract disease
Clinical feature
Marked species specificity
Strong tissue tropism
Cause:
More coryza
More discharge
Less pharyngitis
Less coughing
8. Corona viruses
Transmission:
HC0V infects the respiratory tract by the air –
borne route, by the inhalation of droplets
generated by the coughs and sneezes of
infected individuals.
Treatment
No recorded of drug used
9. (Rhabdo viruses ( Rabies
Recorded in Human and Animals
Clinical features
Predominantly encephalitic disease
Paralytic illness – dumb rabies
Human 2/3 die within 7 days.
10. (Rhabdo viruses ( Rabies
Transmission
Abrasions on the skin
Mucous membranes exposed to saliva from
licks.
Deep penetrating bile wounds
Vaccination
Pasture introduced vaccination after exposure
to rabies in 1885.