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NBME 20 Answers

nbme20/Block 2/Question#2 (50.3 difficulty score)
Following a wedding reception that was ...
Norovirus🔍
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 +3 
submitted by chandlerbas(95),
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i hiknt usebaec ehyt eewr os feipicsc in elitda fro newh the xs gane,b therey tirngy to etst su fi ew nkwo eth osnet of toar vs s.vrrionou sola fi uyo oolk at hte rasnismtosni fo rtvrasuoi tsi OF nad ayireorr,pst os esslun uryoe gylpian wiht poop at a wd,dgein tsi uhmc omer leilky ofdo was hte iaotinr.ssmns ysthcke yass nmteiya uoy chotu oofd wiht ruoy hands ist rono

eesrh a eltba for rreeecnef. 0eee2ctsatprsrhmognsstp12imau.ln/raot-nt6ch/poch-0rfteiomoeemutiry-ycji.o/tsss:iesbpu/bracase1e/alu6r/triat-oapnacryc/

dhkahat  well i personally enjoy tossing the feces around at weddings but what do i know +1  



 +2 
submitted by beeip(123),
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How ot ifeerdifettna wtnbeee oirrNsvuo dan uisovaRrt ere?h tMus eb tldeera ot eht hte ciatsgonou etnaur of hte lslie?ns

strugglebus  You know it’s Noro because people are vaccinated against Rota at 2,4,6 months. +6  
beeip  @strugglebus: I didn't know about the vaccine schedule. Thanks! +  
strugglebus  As an addendum, you know it’s not staph aureus b/c that is rapid onset within 4 hours. +2  
asapdoc  @Beeip If you go to the vaccines page in first aid it gives you all the high yield vaccinations. I didnt realize to correlate that page to a lot of questions until I got this answer wrong +4  
savdaddy  its norovirus b/c it can survive ~2 weeks without a host, which is why we see family members with symptoms 3 days after the initial virus. +  
savdaddy  ***after the initial outbreak +1  
eacv  for me this was a discart qx: 1.Giardia lamblia not showed steatorrhea and it needs medication to go away. 2. Rotavirus normally in unvaccinated kids. 3. Shiguella VERY inflammatory stool test do not show anything 4.S areus is very FAST 2-6 hr after eat the contaminated food. +3  
link981  Norovirus is the most common cause of viral gastroenteritis in the USA due to vaccination. + Rotavirus is the most common cause of viral gastroenteritis in the rest of the world. In this question you had to know the most common cause. +1  



 +1 
submitted by usmleuser007(370),
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sNrioovru yc(tSeh)k = fecAstf hrewe a olt of oleppe era in t uraolqsceres - yscalipeel momonc on uerscsi - 09% of lal ahlraidre tkburoesa no iusresc

sbryant6  Rotavirus occurs in unvaccinated children. In order for it to spread, all those kids would have to be unvaxxed. +  



 +0 
submitted by beeip(123),
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dovem[ to eu]nsbcmotm




 +0 
submitted by strugglebus(163),
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vm[deo ot mum]oetcnbs




 +0 
submitted by strugglebus(163),
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ovm[ed ot msemcotu]bn




 +0 
submitted by mdmikek89(0),

This question is testing whether you know the difference in who the virus infects. Notice it says 25 adults...Norovirus. Rota is preschoolers.




 +0 
submitted by link981(156),
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sruivNoor si the toms moomnc seuac of rilav trsaisneertitgo ni eht UAS ude ot niocvat.inac + aosvrRtui si teh smot mncoom asuce of larvi rognsetiasretit ni the erst of het .wrdol nI hits qeuotisn yuo had ot nowk hte ostm omocnm saceu