Although I know nothing about this disease, I do have a few suggestions that might help.
Since it involves an infection in the blood, I would look through Dr Christopher's site here. especially the herbs to use on blood poisoning.
http://www.herballegacy.com/search.php?zoom_sort=0&zoom_query=blood+infection&zoom_per_page=10&zoom_and=1
One I would recommend is plantain which grows in most lawns and parks
here is a picture
http://0.tqn.com/d/healing/1/0/d/J/1/plantain2.JPG
it is not the grass but the one with the vertical lines going down the leaves with the seeded stem thing...an extremely common plant.
here are some more pictures (it comes in narrow and broad leaf (and is not the banana looking thing but a green plant with the seed looking stem things. It is the leaves you want.
http://images.search.yahoo.com/search/images;_ylt=A0oG7nGZqvhMJggB.EpXNyoA?ei=UTF-8&p=plantain&fr2=tab-web&fr=ytff1-tyc
use it as a fomentation (cotton cloth soaked in tea then put over the body..if it is his whole body maybe soak a jogging suit in it and a towel over neck/head area.
If plastic is put over it (use it hot or warm) it holds the moisture in and is how he usually did it.
It is also used as a poultice by crushing the leaves and applying to infected area (for example, when one has blood poisoning), This plant may well help the blood infection. (for best results combine with the 5 things listed below (garlic etc--either take one two or all of them up to you)
It is also taken internally.
Use it grown in the wilds from an unpolluted area not to close to highways or buy some organic bulk herb to use if you cannot find it.
Once you have your plantain whether fresh or dried (only use organic cut and sifted or wildcrafted or fresh) make a tincture out of some of it (retain some fresh for poultices/fomentations). It is best taken in tincture form when taking internally teas made with distilled water are 2nd best.
As far as the tincture, use when it has settled and the liquid rises above the herb, a 25-50% liquid (80-200 proof vodka) to a 50-75% herb
Shake several times a day and strain in about 2 weeks, label with an expiration date of 5 years and the contents. Take about 2 dropperfuls (60 drops) 5 times a day. If he weighs a lot more than 150 lbs, user Clarks' rule for dosing
http://curezone.com/schulze/handbook/CAD.asp
I would also strongly consider a 100% raw food diet vegan with a lot of juicing/juice fasting focusing on the juices I list in this thread
http://curezone.com/forums/fm.asp?i=1224263#i especially dandelion juice (could add fruit to make it more palatable) and parsley root which has helped people who who swollen with fluids such as kidney patients, bright's disease and so forth.
I have seen both parsley root and dandelion root at some local meijer's stores. Parsley root looks like a carrot but while like a parsnip (but definitely NOT a parsnip) with a parsley looking leafy top (as opposed to carrot's feathery ones).
I would further recommend doing Dr Richard Schulze's incurables program as he got people off dialysis and dead kidneys working again and also said it helps all diseases even one's without a name as does the raw foods (whole food/vegan).
If he will not do a 100% raw vegan whole food diet then try a 85% raw like the hallelujah diet found at hacres.com see click on hallelujah diet tab to see what it is and what foods are considered raw and do and don't foods. Go to the testimony tab there and just type in various diseases to see it miracle power.
Take in a lot of green smoothies when not juice fasting and green juices when fasting.
If you want to know more about the incurables save your life diet by Schulze and or green smoothies/juices, email me.
Also have him do as many as the 35 steps as he can
http://curezone.com/forums/fm.asp?i=1224263#i to help heal his kidneys.
Also take these herbal/supplements that help with viral, bacterial, protozoan and fungal infections in addition to the things recommended on the herballegacy link (Christopher Dr) and the plantain.
1 raw garlic minimum 3 or more cloves
2 organic olive leaf tincture (60 drops 3-5 times a day..I would do 5 or even 7 for this
3 grapefruit seed extract (these may create die off effect--
Herxheimer so look that up if he feels sick
4 colloidal silver
5 oil of oregano
Garlic can be superior to prescription antibiotics as it is selective and only kills the bad and not the good (ie--antibiotics give people diarrhea and yeast infections as it kills the needed and healthy bacteria allowing yeast for instead to overgrow (candida/bloating) but not garlic (must be raw--organic if you can)
Garlic also kills 100% while antibiotics only kill 99% allowing the remaining ones not killed to mutate to superbacteria/viruses that antibiotics no longer work against.
Also unlike antibiotics which only kill bacteria, these 5 things can kill bacteria, viruses, protozoa and fungus.
So in conclusion
1 take these 5 list antibiotics/antivirals (garlic, oil of oregano etc)
2 use plantain organic or wild crafted form clean outdoor area in form of internal tincture, poultices and fomentations
3 drink (also eat) lots of dandelion juice and parsley root and other juices good for the kidneys (see the 35 steps)
4 drink lots of green juices/green smoothies and do juice fasts
5 do full incurables program
6 go to a raw vegan whole food diet (100% preferred or maybe 85% raw)
7 check out Dr Christopher's site linked above, email me if you decide to do the incurables program, and check out hacres.com also look into urine therapy
8 do the 35 steps found at link above or in the dialysis forum