These are NOT spider bites
Although we have had reports of necrotic spider bites, the photos shown here look like they may be spider bites, but are actually MRSA sores.
For additional information, see Skin Lesions in Barracks: Consider Community-Acquired Methicillin-Resistant Staphylococcus aureus Infection Instead of – Spider Bites by Richard S. Vetter, et. al.


Here is a side-by-side comparison from WebMD. http://www.webmd.com/skin-problems-and-treatments/ss/slideshow-closer-look-at-mrsa
Click on image to enlarge.
