Re: Ping Martijn. contact transmission
brent wrote:
> Experimental inoculation of Peromyscus spp. with Borrelia
> burgdorferi: evidence of contact transmission.
>
> Burgess EC, Amundson TE, Davis JP, Kaslow RA, Edelman R.
>
> In order to determine if Peromyscus spp. could become infected
> with the Lyme disease spirochete (Borrelia burgdorferi) by direct
> inoculation and to determine the duration of spirochetemia, 4 P.
> leucopus and 5 P. maniculatus were inoculated by the intramuscular,
> intraperitoneal, and subcutaneous routes with an isolate of B.
> burgdorferi obtained from the blood of a trapped wild P. leucopus
from
> Camp McCoy, Wisconsin. All of the mice developed antibodies to B.
> burgdorferi which reached a peak indirect immunofluorescent (IFA)
> geometric mean antibody titer of 10 log2 21 days post-inoculation. B
> burgdorferi was recovered from the blood of 1 P. maniculatus 21 days
> post-inoculation. One uninfected Peromyscus of each species was
housed
> in the same cage with the infected Peromyscus as a contact control.
> Both of the contact controls developed IFA B. burgdorferi antibodies
> by day 14, indicating contact infection. To determine if B.
> burgdorferi was being transmitted by direct contact, 5 uninfected P.
> leucopus and 5 uninfected P. maniculatus were caged with 3 B.
> burgdorferi infected P. leucopus and 3 infected P. maniculatus,
> respectively. Each of these contact-exposed P. leucopus and P.
> maniculatus developed antibodies to B. burgdorferi, and B.
burgdorferi
> was isolated from the blood of 1 contact-exposed P. maniculatus 42
> days post-initial contact. These findings show that B. burgdorferi
can
> be transmitted by direct contact without an arthropod vector.
>
> PMID: 3513648 [PubMed - indexed for MEDLINE]
"Direct contact" is not defined here. It could mean many things. And as
der pointed out, this is not human beings.
So let's say "direct contact" means contact with blood, urine, saliva
or feces. That doesn't mean it happens in humans.
But perhaps we should infect you brent with Bb and cage you with dali
and janis and see if they develop antibodies to Bb.
Also: by the way, antibodies to Bb might not show infection with
Bb--perhaps these creatures develop antibodies when exposed to Bb
infected creatures or their urine or blood or feces or saliva but don't
become infected.
It would be important to see confirmation of the organism itself.
It would also be necessary to know how the "uninfected" were determined
to be uninfected.
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