Eosinophils rise in response to hookworm infection, seeming to peak between weeks 3-10. This study describes that eosiniphils peak between days 38-64 :

http://www.ajtmh.org/cgi/content/abstract/37/1/126

Peaks between weeks 3-9:

http://www.ajtmh.org/cgi/content/full/75/5/914#F5

Starts to be elevated at days 14-21, peaked on day 42 and declined to
a persistently elevated level:

http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1809522

Peaked week 5, declined by week 20:
“In the CD cohort, blood eosinophilia developed from week 5 (mean
2.60×109/l (1.89) v week 1 0.18×109/l (0.10) v week 20 0.59 (0.20)). ”

http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1856386

But my favorite study, the MS study in Argentina, where they tracked 12 MS patients already infected with helminths and compared them to 12 other MS patients over a 4.6 year period, only recruited the helminth infected patients if their eosinophelia was high, (800-1800 mm3) and it stayed that way for the duration of the study. Their quantitative egg counts were also high: between 1,180 and 9,340 eggs/gram.

Eosinophils reflect parasitic infection, and the higher the number, usually the larger the worm burden. One indication that one has lost their worm infection would be having an elevated EOS for an extended length of time, then having it fall to baseline. Obviously, stool tests would confirm this, as well as symptom regression. In the dose-ranging trial, the higher doses resulted in higher EOS counts, though they did not test longer than 12 weeks.

I only tested my EOS at baseline and 18 weeks, so I never tracked a rise and fall. Baseline values were 74 cells/mcL and only rose to 192 post infection. (Normal is 15-550). Remember, I added worms from weeks 10-18, which may have provoked an immune response that curtailed the new worms from attaching, and possibly displaced some of the first 10, like this capsule endoscopy study shows. So by week 18, perhaps I had very few worms…

I will be testing EOS at weeks 3, 6, 9, and 12 to see how they respond to 10 larvae. I don’t think 10 hookworms are going to be enough to cause persistent eosinophilia. And like the MS study, it seems important to get and maintain a large enough worm burden to stimulate eosinophilia, and maintain a higher egg count. I’m very curious what my results will be this time…

Blood test and band-aid with 10 hookworm larvae

I took 10 hookworm larvae yesterday evening. Within a few minutes, I had a strong itch and sensation of them burrowing in, then a mild itch which is ongoing. I took a “before” blood test a few hours before the infection. I will be monitoring my progress with monthly CRP, ESR, CBC (including eosoniphil count), and iron, ferretin, B12. The only thing I didn’t do was weigh myself, but a few weeks ago, with wet jeans on, shoes, and a jacket, I was 146, so I’d say I’m about 142 or so naked.

CDAI: 163

Right now, symptoms are: abdominal mass in the ilium, with partial obstructive symptoms, copius mucus and blood, diarrhea, some firmer stools, pain in the ileal area about 5/10, but had a partial obstruction 3 week ago with pain of 15/10 (I forgot how horrific those were in terms of pain. Like labor with no good endpoint but a pile of shit.) I’m very tired all the time, and am only eating blended soup, yogurt, and protein for fear of another obstruction. I have mild joint pain, which is a first. I never had joint pain before trying hookworms

I’ve basically been housebound for the last few months; I can go out and walk, but only certain times of the day, otherwise I’m too tired. My husband brings my children to and from school, and I have had to cancel my volunteer times. I probably should have pursued another therapy in this time, sometimes I wonder if I am being foolish waiting so long to troubleshoot these worms; I really don’t want another surgery to be caused by this whole experiment.

Nevertheless, I’m hopeful. I think the original dosing schedule I did was foolish, and I hope that was the reason for my demise. It makes sense, in reading this study, that the immune system has developed a response to curtain new worms from entering. But I had efficacy at first, I had a worm population (though never independently varified). I just have to wait and see…