False positive in a JPG picture

Comodo Internet Security - CIS AV False Positive/Negative Detection Reporting
1

CIS 3.5.57173.439 - Virus signature database version 826 reports that one of my JPG files has a virus. Why it does this? A JPG file can be infected?

Thanks.

2

Have you reported it by e-mail ? (how to report a FP by e-mail)

Thanks

Xan