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56 Cards in this Set

  • Front
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dsDNA, icosahedral capsid, enveloped
most frequent isolate
HSV, VZV, EBV, HHV-6, HHV-7, HHV-8
Herpesviridae
Simplexvirus
transmitted by exposure to infected lesions
encephalitlis, nenoatlal herpes, and herpetic keratitis
HSV
HSV-2: in neonates
HSV-1: older children and adults
diagnose by brain biopsy/culture
can detect early in CSF w/ molecular amplification
HSV- Encephalitis
infants
symptomatic and fatal
vesicular skin lesions
treat with acyclovir or vidarabine
HSV-Neonatal herpes infection
2nd most common cause of corneal blindness
tonsilitis and pharyngitis
HSV- Herpetic Keratitis
Varicellovirus
chicken pox (varicella) and shingles/reactivation (zoster)
empryopathy-in pregnant women, <20 weeks
life threatening in immunocomp. (treat with ZIG)
HSV- Varicella-Zoster (VZV)
Lymphocryptovirus
Infectious mono
HSV- EBV
fever malaise, exudative pharyngitis, lymphadenopathy, lasts 10-20 days
secreted in saliva
infects B cells
can develop> neoplasm
EBV
Roseolovirus
causes exanthem subitum (6th disease)
-in children
-monolike symptoms with focal encephalitis
HSV- Human Herpesvirus-6
Roseolovirus
causes fever and roseola- red/brown skin lesions
HSV- HHV-7
Rhadinovirus
"Kaposi sarcoma-associated herpesvirus"
HSV- HHV-8
dsDNA
icosahedral capsid, naked
Adenovirus
Adenoviridae
Mastadenovirus
2nd most common cause of viral infant diarrhea
acute pharyngitis (mimics group-A strep)
conjunctivitis
Adenovirus
dsDNA
complex capsid with envelope (cytoplasmic)
Smallpox
Poxviridae
Variolavirus and Orthopoxvirus
extinct since 1975
Smallpox
dsDNA
icosahedral capsid, naked
BK,JC,SV40, and Human wart viruses
Papoviridae
Polymavirus
associated with hemorrhagic cystitis in bone marrow transplant recipients
JC- most important, causes destructive encephalitis
Papoviridae- BK, JC, SV40 viruses
Papillomavirus
warts, sexually transmitted venereal warts, and tumors (neoplasias) of respiratory and genitals
Papoviridae- Human wart virus
ssDNA
icosahedral capsid, naked
Parvovirus B19
Parvoviridae
Erythrovirus
erythema infectiosum (5th disease)
-slapped cheek syndrome
Parvovirus B19
segmented ssRNA
helical capsid, enveloped
Influenza A, B, C (Influenzavirus)
Orthomyxoviridae
ssRNA
non-segmented helical capsid, enveloped
Measles, Mumps, Parainfluenza, Respiratory syncytial virus
Paramyxoviridae
Morbillivirus
pneumonia and encephalitis
vaccine makes it rare
Paramyxoviridae- Measles
Paramyxovirus
infectiouns parotitis, aseptic meningitis
vaccine greatly reduces cases
Paramyxoviridae- Mumps
Paramyxovirus
croup and bronchiolitis in <2 year olds
mild respiratory illness in adults
Paramyxoviridae- Parainfluenza
Pneumovirus
recurrent respiratory infs. throughout life
nosocomial diseases
day cares (severe in young children)
croup, bronchitis, bronchiolitis, and interstitial pneumonia
Paramyxoviridae- Respiratory Syncytial Virus
ssRNA
icosahedra; capsid, naked
"small RNA viruses"
Rhinovirus and Enterovirus
Picornaviridae
Enterovirus
common cold
Picornaviridae- Rhinovirus
Enterovirus
poliovirus, coxsackievirus, echovirus, and enteroviruses 68-71
Picornaviridae- Enteroviruses
ssRNA
helical and enveloped (bullet shape)
Rabies
Rhabdoviridae
Lyssavirus
fatal viral zoonosis
most common bite transmitted virus (dogs)
fatal if PEP injection not administered
Neurotropic disease
-death with in days of late stage symptoms
Rabies
ssRNA
helical, enveloped
high fever, shock, multi. organ system involvement, and hemorrhage
exposure to body fluids
Marbugvirus
Ebolavirus (Sudan strain 50%, Zare strain 90%)
Filoviridae
segmented, ssRNA
helical, enveloped
transmitted by arthropods or rodents excreta
California encephalitis virus and Hantavirus
Bunyaviridae
Bunyavirus
mosquitoes
Bunyaviridae- California Encephalitis Virus
Bunyavirus
Sin Nombre
from aerosolized rodent feces
causes HPS
-hemorrhagic fever, kidney disease, acute respiratory failure, shock and renal failure
Bunyaviridae- Hantavirus
causes Human Gastroenteritis Virus (2)
acute vomiting/diarrhea, mild-selflimiting, non inflammatory
Calciviridae and Reoviridae
ssRNA
icosahedral, enveloped
Norovirus & Human Gastroenteritis Virus
Calciviridae
dsDNA
icosahedral, naked
Human Gastroenteritis Virus&
Rotavirus
-wheel-like
-#1 cause viral infant diarrhea
Reoviridae
ssRNA
helical, enveloped
colds and pneumonia
SARS-COV
-pandemic of respiratory disease, Hong Kong
Coronaviridae
ssRNA
icosahedral, enveloped
Rubella virus
Togaviridae
Rubrivirus
acute febrile illness with macropapular rash
-German measles (rash, face>body, lasts 3 days)
transient arthritis or encephalitis
transmitted by aerosols or transplacentally
-1st trimester, 75% neonated deaf/blind
Rubella Virus
ssRNA
capsid unknown, enveloped
Zoonotic- from rodent urine, feces, saliva
Old World Arenavirus and New World Arenavirus
Arenaviridae
Arenavirus
Lymphatic choriomeningitis virus
Lassa virus (W. Africa hemorrhagic fever)
Avenaviridae- Old World Arenavirus
Arenavirus
Tacaribe, Guanarito (Venezuelan hemorrhaic fever), Junin (Argentine h.f.) and Machupovirus (Bolivian h.f.)
Avenaviridae- New World Arenavirus
arthropod borne infection of small mammal, birds, and humans
caused by Togaviridae, Alphavirus and Flavavirus
Arboviruses
Group A- Arbovirus
ssRNA
mosquito/ticks
Eastern Equine Encephalitis Virus
Western Equine Encephalitis Virus
Venezuelan Equine Encephalitis Virus
Togaviridae- Alphavirus
Group B- Arbovirus
ssRNA
icosahedral, enveloped
mosquito/tick
common-mild, febrils
less common- severe, encephalitis, hemorrhaging, feverm and/or liver damage
causes West Nile, Dengue, and Yellow Fever
Togaviridae- Flavavirus
ssRNA
icosahedral (with 72 external spikes), enveloped
Human T-lymph Virus 1&2 and HIV
Retroviridae
Deltaretrovirus
Retroviridae- HTLV- 1&2
Lentivirus
sexual and parental transmission
initial infection
-transient febrile disease
-lymphadenopathy, pharyngitis, rash
-ARC
-also leukoplakia (white lesion on tongue)
6 weeks p.i.
-flu/mono like symptoms
AIDS
-T cells, CD4, <200/mm3
Retroviridae- HIV
Hepatitus Viruses (5)
symptoms- anorexia, malaise, dark urine, pale stool, vomiting, headache, jaundice
HAV
HEV
HBV
HCV
HDV
transmission- enteric
classification- Picornavirus
genome- ssRNA
HAV
transmission- enteric
classification- Hepevirus
genome- ssRNA
HEV
transmission- parental
classification- Hepadnavirus
genome-dsDNA
causes Hepatitis
HBV
transmission- parental
classification- Flavavirus
genome- ssRNA
causes Hepatitis
HCV
transmission- parental
classification- Deltavirus
genome- ssRNA
causes Hepatitis
HDV