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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