WB certainly went in for some interesting experiments
Experimental Infection of the African Relapsing Fever Tick, Ornithodoros moubata (Murray), with Borrelia latychevi (Sofiev).
Author(s) : BURGDORFER, W. ;
DAVIS, G. E.
Journal article : Journal of Parasitology 1954 Vol.40 No.4 pp.456-460 pp. ref.4
Abstract : A strain of
Spirochaeta (Borrelia) latyschewi w as obtained from infected examples of
Ornithodoros tartakovskyi Olenev sent to the author by Baltazard [
cf. preceding abstract]. These ticks were fed on a white mouse, and other mice were infected by inoculation of its blood as soon as it was found to contain spirochaetes. Large numbers of second and fourth-stage nymphs and adults of
O. moubata (Murr.) were fed on mice thus infected and were then kept at room temperature and a relative humidity of 79 per cent. A few were dissected each day and their organs were examined for spirochaetes, and haemolymph and coxal fluid from others were also examined. The haemolymph was obtained by amputating the distal portion of the legs, and the coxal fluid by applying a warm needle or forceps to the ventral surface of the ticks, which causes them to expel it. The examinations showed that the spiroehaetes persisted and multiplied in each of the stages studied. They were found consistently in the central ganglion, coxal organs and salivary glands, in the walls (but not the lumen) of the Mal-pighian tubes, and in the tissues of the genital system of female adults. They were also found in eggs and nymphs produced by infected females.
They were often, but not always, found in the haemolymph of ticks of which the organs were infected.
The occurrence of the spirochaetes in the salivary glands and coxal organs suggested that they might be transmitted by
O. moubata, and several hundred ticks, almost all of which showed spirochaetes in the coxal fluid, were accordingly fed on white mice or new-born rabbits. There were 73 experiments, each with a batch of 3-10 ticks, but none of the animals became infected. Further experiments indicated that these negative results were due to a loss of virulence of the spirochaetes in
O. moubata rather than to its failure to transmit them, since infection was produced in all mice and new-born rabbits that were inoculated with blood from a mouse infected by
O. tartakovskyi and in only a small minority of those that were inoculated with suspensions of infected examples of
O. moubata.
ISSN : 0022-3395
DOI : 10.2307/3273896
This is one of WB's early papers and is interesting. After 1978 Burgdorfer should have known he might be looking for spirochetes, given the European evidence, of which he was aware. Given this research he did with Davis in 1954 he knew that his haemolymph test was not entirely reliable. Perhaps he placed less reliance on the test than is suggested, but perhaps not. It all looks strange. It appeared to come as a surprise to him that spirochetes could be present, in his 1981 tick, but not showing up in the haemolymph. It should not have done.
One can only speculate on the purpose of this research.
When it comes to presentation of evidence WB seems to favour a style which gives rise to suspicion, which may be unjustified. In his 1984 paper he wrote
Remembering the European literature, I could not dismiss the thought that the microfilariae did lead me to the discovery of the long-sought cause of ECM and Lyme disease.
This led me to trying to find the European literature to which he referred. It rather looks as though he was referring to his own paper
https://www.scopus.com/record/displ...inward&txGid=f3bf7013611bb760c0dccdc90d964f47
Acta TropicaVolume 36, Issue 2, 1979, Pages 181-191
New aspects of the role of the vector played by Ixodes ricinus L. in Switzerland. Preliminary note
… In this article, we describe the existence in the hemolymphe of different I.ricinus populations, of a rickettsia species related to the RMST group (Rocky Mountain Spotted Fever), of a trypanosome, which is close to T.theileri, and of an infectious larval form (L3) of Dipetalonema rugosicauda. An outline is suggested with the object of illustrating the functioning of a natural foci of tick encephalitis. The biological significance of the unusual presence of trypanosomes and of larval filariae in ticks is also discussed....
It does seem strange that he indicates the significance of this evidence, and then makes it extremely difficult to find it. Unfortunately I have not found the full paper. Presumably it was not modesty which prevented him from quoting his own papers. I thought scientists were supposed to leave a "paper-trail".