Normally, with a coronavirus, weSeymourviralsheddingandmoretransmissionwhen a personismoresymptomatic, Chinahasreportedtheremaybeevidenceofasymptomatictransmissionallofthesequestionsmustandwillbeansweredinordertoprovide a properriskassessment.
Whatwe'vedoneiswe'velookedatpeoplewherewehave a goodideawhentheygotinfectedandthenwe'redoingserialswappingonthemtoseeatwhatpointtheystarttoshedthevirus, atwhatpointthattheystarttodevelopsymptoms.
Noneofthathasbeendonewiththisparticularvirus, so I thinkwearetooearlytogetverydefinitiveabouthowitistransmitted.
Ifwetake a bigstepback, though, andlookattheepidemiology.
ThespreadseemstobesimilartowhatwesawduringSARS, whichisthatpeoplewhoaresickarethemostlikelyoneswhoareactuallyspreadingitwell, giventheunknownsandgivenwhatyoujustsaid, shouldpeoplewhohavebeentotheWuhanregionbeestyleselfisolatingas a precautionrightnowthat's notrecommended.