Hepatitis Flashcards
Clinical
Primary Acute phase= systemic = flu like (fever and myalgia)
Add’l = Jaundice, dark urine (bilirubinuria), light stools (decreased bile), itch, hepatosplenomegaly, increased AST and ALT
Flaviviridae: Yellow Fever Virus Clin
Hepatitis. Mild to severe (GI hemo and black emesis). Progression to include infection of kidneys and liver (likes fixed macrophages)
Flaviviridae: Yellow Fever Virus char
ss pos sense RNA virus; enveloped
Infects dendritic cells, macrophages, monocytes and hepatocytes
Flaviviridae: Yellow Fever Virus Res
Animals
Flaviviridae: Yellow Fever Virus RF
Unvccn travelers to SAfrica and SAmerica
Flaviviridae: Yellow Fever Virus Trans
Mosquitos
Flaviviridae: Yellow Fever Virus Diag
Serology
Flaviviridae: Yellow Fever Virus Vccn
Live attenuated
Leptospira Interogens Clinical
Leptospirosis. Asymp to mild hepatitis. May progress to severe hemorrhagic disease.
Leptospira Interogens Char
Gram neg spirochete with bent ends
Leptospira Interogens VF
Hyaluronidase
Leptospira Interogens Res
Animals; survive in water/soil up to 3 months
Leptospira Interogens Trans
Direct/Indirect
Leptospira Interogens RF
Exposure to animal urine and water sports
Leptospira Interogens Diag
Paired sera; darkfield microscopy; PCR; Elisa; Agglutination
Leptospira Interogens Prvt
Rodent Control
Leptospira Interogens Comp/Seq
Well’s disease = Kid fail (increased creatinine)
Viral Cytopathology HAV and HEV
Both lack an envelope; stable in enviro (fecal oral). Cytopath = lytic so constantly provide extracell targets for IR. Generally no comp/seq or chronicity
Viral Cytopathology HBV and HCV
Both have envelope; not stable in enviro so body fluids required. Cytopath = budding and CTL/NK removal of infected cells. If inadequate IR = chronicity and clinical progression to cirrhosis and hepatocell carcinoma
Viral Cytopathology HDV
Defective virus; has an envelope. Can’t replicate w/o HBV
Picornaviridae: HAV Clin
Hepatitis. Enterically transmitted. IP=28 days. Dur = 2wks to 3 months. No chronic
Picornaviridae: HAV Char
ss pos sense RNA viruse non-env
Picornaviridae: HAV trans
Fecal oral; low inf dose. Close personal contact: household, daycares; analingus. Contaminated food, drinking water: food handlers, raw shellfish, certain produce
Picornaviridae: HAV RF
Unvccn
Picornaviridae: HAV Diag
IgM = acute; IgG = post inf
Picornaviridae: HAV Vccn
Inact and live attenuated (Ig passive for post exp)
Hepeviridae: HEV Clin
Entericall trans hepatitis. IP - 40 days. Dur - 4 to 6 wks. Rare fulminating disease. Reactivation in immunocomp.
Hepeviridae: HEV Char
ss pos sense RNA virus; non env
Hepeviridae: HEV Res
Humans and animals
Hepeviridae: HEV Trans
Fecal oral, some transplacental
Hepeviridae: HEV RF
Shellfish, high mortality in third trimester preggo. Eastern and South Asia
Hepeviridae: HEV Diag
Indistinguishable from Hep A. IgM for acute, IgG for post inf
Hepadnaviridae: HBV Char
Partially ds circular DNA virus; enveloped
Hepadnaviridae: HBV Res
Humans
Hepadnaviridae: HBV Trans
Parental, sexual, perinatal
Hepadnaviridae: HBV RF
Unvccn, IDU; neonates of chronic mother
Hepadnaviridae: HBV Prvt
Recombinant vccn (subunit with s proteins), HBV IgG post/pre-exposure in aprop populations. Infant = active and passive immunizations w/in 12 hrs of birth
Hepadnaviridae: HBV Clin
IP = 60 to 90 days. Hepatitis
Hepadnaviridae: HBV Diag
HBsAg - general marker of infection HBsAb - documents recovery HBcIgM - acute HBcIgG - chronic HBeAg - active replication, high trans HBeAb - virus not rep, low trans
Hepadnaviridae: HBV Window Period
both seromarkers HBsAg and Anti-HBs are neg because theyr are bound to each other. Other markers HBcIgM can be pos at this point.
Hepatitis D Virus Clin 1
Coinfection with HBV. Acute disease similar to HBV alone or slightly more symptomatic. low risk of chronic infection
Hepatitis D Virus Clin 2
Superinfection. On top of chronic HBV. Results in the most svr acute disease cases. Usually develop chronic HBV/HDV infection. High risk of liver failure.
Hepatitis D Virus Char
Defective ss neg sense RNA virus; enveloped w/ HBsAg inserted
Hepatitis D Virus Res
Humans
Hepatitis D Virus Trans
Parenteral routes
Hepatitis D Virus Diag
Serology - Total Ag
Hepatitis D Virus Tx
Treat HBV
Flaviviridae: HCV Clin
Hepatitis. Most new infections subclinical with 90% chronic leading to cirrhosis and heptocellular carcinoma
Flaviviridae: HCV Char
ss pos sense RNA virus, enveloped; 6 genotypes
Flaviviridae: HCV Res
Humans
Flaviviridae: HCV Trans
Parenteral (decreased sexual; fetus)
Flaviviridae: HCV RF
IDU, Tatoo, hemodialysis, use of blood products
Flaviviridae: HCV Diag
Serology for total Ig; PCR
Flaviviridae: HCV Tx
Pegylated IFN-alpha/ribavirin.
Telaprevir (protease inhib) which inhib rep