 Ahavuye isanamu, Getty Images Dr Michael Baden, wahoze akora bene aya masuzuma mu mujyi wa New York City, ejo ku wa mbere yabwiye abanyamakuru ati: Ku bwanjye impamvu yurupfu ni ukubura umwuka, bitewe no gutsikamirwa ijosi - ibintu bishobora kubuza umwuka kugera ku bwonko - no kumutsikamira ku mugongo, nabyo bitera kunanirwa guhumeka. 