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NBME 23 Answers

nbme23/Block 4/Question#18 (49.5 difficulty score)
An investigator is conducting a study to ...

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submitted by drsquarepants(14),
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I nfudo siht eluhpl,f eonlpveed sv. ovdoneepnlne

drsquarepants  Chart on slide 22 +4  
megaera13  Thank you. Definitely need to note this down somewhere. +1  

submitted by thomasalterman(147),
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onveeElsp ietbenf het usivr in htat hte sruvi iwll kloo kile eht soth, tcfainitgial f.oiuns Hv,reewo na vdeeenolp vursi is eelrnylga lsse eatbsl naht a dkena drscohliaae vrius naek(d rseusiv era lnreayleg s)reacdohai.l

docred123  So do these patients have h.Flu? What was the giveaway? Thanks +1  
mousie  I chose Enveloped simply bc it said dies when heated, not sure if there where any other clues to narrow this down or make me feel more confident in my choice but I went with it anyway +16  
eclipse  I don't think they expected us to narrow down the answer to a specific virus. Enveloped viruses tend to be less stable (?) than the non-enveloped ones and don't survive as well under harsher environments (outside human's body, heat, etc.) +2  
peridot  To add on, I also have no idea what virus this could be but the question stem does say "A previously unidentified virus is recovered from urine specimens" making me think that it's not something we're supposed to have know about, unless I'm totally understanding it wrong. +1  

submitted by lamhtu(113),
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A isoseblp trgotiieann to pelh whit wesrninag itsh ni:toseuq rmSkciytohce staset eno bpelisos way ot tateaniicv eisraveaursn si .heat aAsereriusnv era eoeevpn.dl If ouy nac meermber h,its uyo anc kepe htargtsi htat lpeonvede urievss are ti-lhbealea ees)(nstvii

submitted by underd0g(8),

My last-ditch reasoning was that SPORES are heat-resistant; therefore enveloped viruses must not be.

submitted by brise(45),

AKA the reason why covid can be killed with heat! B/c it is enveloped!