virustotal see how the results of analysis

15/41 means 15 detect a virus or detect viruses?

15 check out a problem, but to explain the results of inspection are not necessarily kill the virus because each virus definition software are not the same as a reference so you can determine most of the virus it must be

is the 15 antivirus engines that have problems, check anti-virus engine, which reported 15 drug, big brands can letter.and report the type of drug.