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Microbiology
Viruses
Question | Answer |
---|---|
What size are viruses compared to other living organisms? | Smallest Living Organisms |
Viruses are described as what kind of parasite? | Obligate intracellular parasite (must reproduce within living cell) |
What is the structure of a virus? | DNA or RNA - core with a protein coat |
How are viruses grown? | Grown in actively growing tissue 1) living susceptible animal 2) embryonic egg 3) tissue culture |
How are viral diseases often diagnosed? | Blood test - Immunologic testing for antibodies in blood against the virus |
Define Latency | Inactive - can recure |
Define Oncogenicity | Cancer Cell |
Define Teratogenicity | Physical defects in the embryo or fetus |
HSV Type I | Herpes Simplex Virus Type I Fever Blisters - Cold Sores |
HSV Type II | Herpes Simplex Virus Type II Genital Herpes - Vesicle clusters on genitalia |
VZV | Varicella Zoster Virus Chicken pox - Shingles |
CMV | Cytomegalovirus Asymptomatic (fetus, newborn, immunodeficient) |
EBV | Epstein-Barr Virus Mononucleosis & Burkitts lymphoma |
HBV | Hepatitis B Virus Blood & Blood products, semen, vaginal secretions, breast milk |
HPV | Human Papilloma Virus Warts, Genital warts - linked to cervical cancer |
Morbillivirus | Red measles or Rubeola "R" in MMR |
Rubella | German Measles "M" in MMR |
HIV | Human Immunodeficiency Syndrome AIDS - Decreased levels of helper T lymphocytes Blood and Blood products, Semen, Vaginal Secretions, Breast Milk. |
HAV | Hepatitis A Virus Inflammation of the liver Diarrhea, Oral/Fecal contaminated food, shell fish (feces in water) |
Rhinovirus | Common Cold |
Which viruses are transmitted by the oral/fecal route? | Polio, HAV |
Which viruses are sexually transmitted? | HSV type II, HBV, HPV, HIV, HCV |
Which viruses does the MMR vaccinate against? | Red Measles, Mumps & Rubella |