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Viral diseases

Viral diseases. Microbiology Mrs. McGuire. Smallpox. Caused by the variola virus Except for laboratory stockpiles, the virus has been eliminated Transmitted by direct contact (can be infected by using contaminated bedding or clothing) Last naturally occurring case was in Somalia in 1977.

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Viral diseases

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  1. Viral diseases Microbiology Mrs. McGuire

  2. Smallpox • Caused by the variola virus • Except for laboratory stockpiles, the virus has been eliminated • Transmitted by direct contact (can be infected by using contaminated bedding or clothing) • Last naturally occurring case was in Somalia in 1977. • Vaccine was used to eradicate the virus • 30% fatality rate

  3. Ebola • Ebola hemorrhagic fever • Five subtypes • Caused by the Ebola virus • Researchers believe that the virus is zoonotic (animal borne) • Infections are acute and spread through direct contact • Last outbreak was in Dec 2008- Feb 2009 • 32 people were infected, 15 died • 160,000 deaths since 2000

  4. Ebola • Symptoms include • Fever • Headache • Sore throat • Weakness • Diarrhea • Vomiting • Stomach pain • Rash • Red eyes • Hiccups • Internal and external bleeding

  5. AIDS • Caused by the Human Immunodeficiency Virus • Transmitted through sexual contact, blood, from mother to child • People at highest risk • Injection drug users who share needles • Infects born to mothers with HIV • People engaging in unprotected sex • People who received blood transfusions between 1977 - 1985

  6. AIDS • Infection can be asymptomatic for over 10 years • Almost all people infected with HIV, if not treated, will develop AIDS • There is no cure for AIDS • Treatment with highly active antiretroviral therapy (HAART) • Can suppress the levels of HIV, life can be significantly prolonged an improved

  7. 2007

  8. HIV / AIDS in the World 2008

  9. Extra Credit – Due March 23rd • Create a presentation (slide show, power point, video, etc.) that contains the following information about any viral disease that infects humans: • What is the biological cause of the disease? (what is the name of the virus) • What are the symptoms of the disease? • How is the disease spread? • What methods are available to prevent, treat, or cure the disease? • What individual actions or circumstance might lead a person to contract the disease? • What social actions or circumstances might influence the spread of the disease? • When was the most recent outbreak? (provide statistical data if possible) The disease must be caused by a VIRUS!!!

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