mdwannabe
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HBc Ag is located inside cell where virus is replicating, so it is impossible to detect it in plasma. Hence, HBcAB is always positive even in "window" period.
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| tonguo
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1. salmonella and shigella are the two most prevalent bacteria that cause diarrhea; as to Rota virus, it mainly cause problem in young children, not adults.
2. HBc Ag is located inside viral core. it is not exposed and therefore is undetectable.
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| namf
Forum Elite
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Thanks for the replies everyone.
For 1), I thought it might be E.coli, but I guess this is only for travelling adults. What do you think?
2)I understand that HBcAg is in the core, but I thought HBeAg was too--yet it is measured. I guess I will just accept that it is really, really, really deep inside the core, and is not worth/good idea to measure.
feedback is appreciated! 
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| mjl1717
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Campylobacter-(the curved,flagellated,fastidious microaerophilic negative rod) is the most common cause of bloody diarrhea in a healthy individual!
[Skirrows medium]
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| tonguo
Forum Senior
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I would still stay shigella and salmonella for the 1st q. I think E. coli is the leading cause of UTI, not diarrhea.
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| mdwannabe
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HBeAG is the infective stage/reperuduction stage particle. it leaves the cell and is detecible in plasma. It is a split product of the viral polyprotein.
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"Life not lived for others, is not worth living" Uncle Einstein
"A life is not important, except in the impact it has on other lives" -Jackie Robinson
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| Malaysian
Forum Guru
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I think its either shigella or campylobacter......I think I'll go with campylobacter.
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| humbty
Forum Elite
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Jawetz and Kaplan both say Campylobacter is more common than salmonella and shigella together!
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| bactitech
Forum Elite
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Yes, it is Campylobacter. The problem with Campy is it's harder to grow, and must be plated on special plates and incubated in a microaerophilic atmosphere at 42 degrees C. We use special Campy paks with a generator inside. We don't open the Campy plates for two days.
We see a lot more Salmonella than Shigella.
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