Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
Variola virus
(smallpox) |
epid: respiratory secretions, highly contagious
pathogenesis: resp system to blood and internal organs___epidermal layers of skin host response: lesions in skin, infect organs, may be fatal |
|
Herpes Simplex Virus
HSV Fever blister, cold sore |
epid: contact
pathogenesis: virus infect skin, but dormant in skin or ganglia when cold sore not present host response: tingling or itching before inflammation, edema, thin walled vesicle on skin |
|
Varicella Zoster virus
VZV chicken pox |
epid: resp secretions
pathogenesis: resp system to blood, nerves, skin host response: fever, rash, trunk progress into itchy fluid lesions, may be crusted |
|
Herpes Zoster
Shingles |
epid: outbreak of latent virus
pathogenesis: latent virus activates from dorsal root ganglion to pns to skin host response: localize lesios on waist, chest, back, face, sensory nerves, inflammation and pain |
|
EBV
Epsteinbarr virus human herpes virus 4 |
epid:
pathogenesis: uncertain mechanism transformed b cells (no antibodies formed against virus) host response: fast growing tumor in children, b cell malignancy in the jaw and grossly swells in the check |
|
Burkitts lymphoma
infectious mononucleosis |
agent:
epid: contact, kissing resp secretions pathogenesis: saliva to parotid glands where virus reproduces host are b cells host response: high fever, swollen lymph nodes, greywhite exudates in throat, skin rash, enlarged spleen and liver |
|
Hepatitis B Virus
HBV |
epid: parenteral, via blood, saliva, breast, semen, sex
pathogenesis: liver infection from bodily fluids, inflammation host response: half are asymptomatic, appetite, lowgrade fever, jaundice. assctd w liver cancer |
|
Papilloma virus
wart |
epid: contact, parenteral
pathogenesis: virus stimulates uncontrolled but benign cell growth host response: multiple fingerlike projections, smooth or flat |
|
Influenza virus
|
epid: respiratory secretions
pathogenesis: inflammation of resp mucus membranes host response: chills, fever, muscle aches |
|
Hanta virus
|
epid: vector, inhalation of urine, feces from rodents
pathogenesis: virus destroy capilary in lungs, fluids seep into alveoli host response: hemorragic fever, fatal, lung fills w fluids |
|
Morbillivirus
Measles virus, rna |
Epid contact, resp secretions
Pathogenesis resp tract to blood to skin Host response sore throat, cough, fever w skin rash, flat lesions, face to extremities |
|
Lyssavirus
Rabies |
Epid vector, bite, scratch, licking by rabid animals
Pathogenesis skeletal muscle, conn tissue to peripheral nerves to cns Host response agitation, calm, muscle spasms in mouth, pharynx, with air drafts, swallowing liquids, due to extensive damage to brain nerve cells, then death |
|
Rubivirus
Rubella virus German measles Congenital rubella syndrome |
Epid contact, resp secretions
Pathogenesis resp system, to blood, to skin Host response much milder then rubeloa, often undetected rash of small red spots, light fever |
|
Hiv and aids
|
Epid parenteral, via blood, semen, milk
Pathogenesis virus attacks t cells and macrophages Host response very low helper t cell count, immune system compromised |
|
Htlc 1
Human t cell leukemia virus Adult t cell leukemia |
Epid repeated intimate contact, may be by infected blood cells
Pathogenesis oncovirus transforms leukocytes into becoming cancerous cells Host response chronic, fatal, extreme persistent lymphocytosis, Cancer involving lymphatic system |
|
Poliovirus
Poliomyelitis |
Epid fecal oral
Pathogenesis from throat, small intestine to lymph nodes, blood, cns, death of motor nerve cells Host response |
|
Hepatitis A
Hav |
Epid fecal oral
Pathogenesis virus in intestinal lining, viremia, liver, kidneys, spleen Host response half subclinical, anorexia, malaise, nausea, diarreah, ab discomfort, fever, chills, jaundice |
|
Rhinovirus
Common cold |
Epid contact, resp secretions
Pathogenesis inflammation of upper resp tract Host response sneezing, nasal secretions, and congestion |
|
Prions
Proteinaceous infectious particle |
Responsible for spongiform encephalopathies such as mad cow disease, scrapie in sheep, kuru, and creutzfeld jakob disease in humans
|
|
Creutzfeld jakob disease
Cjd |
Sporadic, worldwide distrib, transmitted by intimate contact w infected patient, variant cjd, could be caused by ingesting meat from infected cattle
Symptoms-altered behavior, dementia, memory loss, impaired senses, delirium, premature senility, uncontollable muscle contractions until death |
|
Kuru disease
From prions |
Once endemic among natives of new guinea, cannibalism, transmitted by eating brains of infected persons, symptoms are unsteadiness and shivering tremor, loss of locomotion and mental deterioration
|
|
Viroids
|
Infectious rna particles, short pieces of naked rna (no protein coats)
Responsible for some plant diseases |