The document discusses several virus families including poxviruses, adenoviruses, herpes viruses, corona viruses, and rhabdoviruses. Poxviruses cause skin lesions and molluscum contagiosum lesions. Adenoviruses cause respiratory infections like the common cold. Herpes viruses cause infections like cold sores, chickenpox, and mononucleosis. Corona viruses typically cause upper respiratory infections while rhabdoviruses can cause rabies, a serious neurological disease. Transmission of these viruses occurs through respiratory droplets, contact with skin lesions, or exposure to animal bites or scratches.

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.

3. Adenoviruses
Adenoviruses cause acute respiratory disease
( common colds ), they are named after
adenoids, from which they were first
isolated.

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.

11. Corona viruses

12. Corona viruses

13. Corona viruses

14. Corona viruses

15. Corona viruses