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Chp 19, Lect 7 (Disease of poxviruses (Poxviruses are DNA viruses,…
Chp 19, Lect 7
Disease of poxviruses
Poxviruses are DNA viruses
Smallpox occurs by inhalation of virus
Can spread through respiratory tract or even direct contact
Variola virus stocks are maintained in US and Russia labs for research
Treatment requires immediate vaccination
Herpes Infections
Slow speeding skin lesion
Caused by Human herpes virus 1 and 2
Painful lesions caused by inflammation of cell deathh
Fusion of infected cells
Spread between mucous membrane
Warts
Benign epithelial growths on the skin or mucous membrane
Various papillomaviruses cause warts
transmitted via direct contact and fomites
various techniques to remove warts
Chickenpox and Shingles
Chickenpox is a highly contagious infectious disease
Shingles occurs following reactivation of the virus
Varicella-Zoster virus causes both diseases
spreads through respiratory tract to skin via blood and lymph