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20 Cards in this Set
- Front
- Back
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What are food borne viral disease?
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In host and host specific..can't grow in more than 1 place. Viruses must be cultured in cell tissue cultures
always infection, never grow in food, due to poor sanitation, contaminated food/water, or direct contact nature of viruses makes it hard to diagnose/trace epidemiology |
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What are the differences between viruses?
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All food borne: naked viruses: can live longer than food borne bacteria even with cl-
Animal vir: Naked or enveloped regular viruses die outside of host, but Naked viruses surveive longer outsdie than bacteria: Naked viruses> gram+ bact> gram- bact.> enveloped viruses |
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Gastroenteristis vir...
Human Rotavirus 1) What is it? |
R for RNA virus
E for enteric O for ophan, at time of disease, cause was unknown major cause of infantile G* incubation:1-3days |
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Gastroenteristis vir...
Human Rotavirus 1) What does it do? |
infantile G*:
Diarrhea and vomit |
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Gastroenteristis vir...
Human Rotavirus 1) What is the transmission and treatment? |
it's human to human.
extereme sanitation espeically in daycares there is a vaccine but 4 serotypes so it is still under trial |
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What is Norwalk Virus?
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Gastroenteristis vir.
never cultured but seequenced, belong to SRSV group or small round structed viuses incubation:1-2days |
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What are the symptoms of Norwalk Virus?
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most common G*
in school age and older higher antbodies has greater susceptibility Diarrhea and vomit adults mostly Dia kids mostly vomit |
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What is the transmission and treatment for Norwalk virus?
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water, undercooked shelllfish
food made by carriers human-human sanitation impossible to eliminate because surive well outside body after excreted |
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What are Enteroviruses?
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General info: group in PICORNA VIRUS: all small rna viruses trasmitted by fecal-oral route not usualy G* causing cause minor compare to damage they do to others
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What is Polio Virus
or paralytic poilo? |
Entericvirus...
More rich people have it incubation: 1-2week for 1st phase older victin, the better to go to next phases |
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What are the symptons of polio?
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first phase: Diarrhea ass/
with intestinal colonization 2nd phase: Viremia: virus in blood 3rd phase: CNS infection + paralysis or paralytic disease |
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What is the transmission and control of polio?
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intestinal infectoin: lifelong imm.
if sanitation bad, then infant gets it, less in older age if sanitation good, then in school age, no immnuniy when younger. common food is from oysters immunization complete word wide radication expected in few years due to suscces of live vaccine. |
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What is Hepatitis A virus?
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Enterovirus
6/7 hepatitis viruses but H A causes infectious hepatis, relatd to polio transmitted by fecal-oral route incubation: 15-50days duration: 1-2weeks kidswith no liver symptons but weeks to months for older, perm. liver damage pssible |
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What is the sympton of Hepatitis A?
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1st phase: Diarr w/out
liver sumpton ass with intest. Colonization 2nd phase: extensive liver damage ass with coloniztin of liver: jaundice, severe weakness, intermittnet das. |
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What is the treatment and transmission of Hepatitis A virus?
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if sanitation bad, infants gets it, then lifetime imm. Like polio.
if sanitation good, then in older phase of life, as older, sypmtons are more servere mostly from watery, food made by infected handlers, raw shellfish, direct transmission. only treatment is good sanitation |
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What is Coxsackie Virus?
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Enterovirus
found first in stool of paralytic patient very rare or rare forms are pathogenic |
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What are the sympton of Coxsackie Virus?
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may cause meningitis
and foot-hand-mouth diesase i.e. blisters. |
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What are Echovirus?
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E: enteric transmission
C: cytophatogenic, alter tissue culture cells H: human, only human O: orphan, same as Reovirus. |
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What are they sympton of Echovirus?
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no longer orphan
known to cause intestinal and CNS dis. |
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How is Echovirus transmitted?
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from raw shellfish, rare cases
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