Tekenbeet en transmissietijd

[Henriëtte]

Dr. Samuel Shor April 28, 2018;

http://www.ilads.org/ilads_news/2018/sa ... bc27-news/

"Tick born Diseases can transmidded in just a few hours".

Henriëtte

[Henriëtte]

Was tun nach dem zeckenbiss?

Nach 12 bis 24 Stunden können in ihrem Darm vorhandene Erreger der Lyme-Borreliose in den menschlichen Blutkreislauf gelangen.

https://www.gesundheitsstadt-berlin.de/ ... biss-6126/

Henriëtte

[Henriëtte]

Transmission; Texas Lyme Disease Ass. - 2016

A misconception about Lyme disease is that a tick must be attached to a person for 48 hours before transmission of the disease can occur. Transmission has now been documented in a pediatric case with a tick attachment of only 30 minutes. Probability of transmission, however, does increase over a longer period of attachment.

https://www.txlda.com/transmission/

Henriëtte

[Henriëtte]

Besmetting met Lyme gebeurt sneller dan verwacht.

Onderzoek van het Institut Pasteur toont aan dat de Europese varianten van de Lyme bacterie al in speekselklieren aanwezig zijn voor een tekenbeet. Bij volwassen teken gebeurt besmetting binnen 24 uur, bij nimfen vaak al binnen 12 uur. Zo snel mogelijk verwijderen is van levensbelang!

''Unlike the American strains, all the European species of B. burgdorferi that we studied were detected in the salivary glands of adult ticks before a blood meal, suggesting the possibility of rapid transmission of the bacteria following a bite. The results were consistent with this theory: infection occurred within 24 hours of a bite from an adult tick. Moreover, our analysis shows that nymphs infected by European species of B. burgdorferi are capable of transmitting these pathogens within 12 hours of attachment. Our study proves that B. burgdorferi can be transmitted more quickly than stated in the literature. It is therefore vital to remove ticks as soon as possible after being bitten to prevent infection.''

#Lymevereniging #Tekenbeet #Besmetting

Lyme Disease; A Study on the speed of transmission by infected Ticks;

https://www.pasteur.fr/en/research-jour ... cted-ticks

Henriëtte

[Henriëtte]

Tick bites – feeding habits and disease transmission times.

Ixodes species were shown to be the fastest feeders, and studies have demonstrated that this tick species can transmit pathogens, such as the Powassan virus in as little as 30 minutes.
Borrelia burgdorferi , the causative agent for Lyme disease, has been shown to be transmitted in less than 16 hours.

https://www.cvbd.org/static/media/CVBD- ... kBites.pdf

Henriëtte

[Henriëtte]

Lehrbuch Lyme-Borreliose;

Angeblich zu kurze Saugdauer (der Zecke). Tatsächlich erfolgen 80 % der Infektionsübertragung innerhalb eines Tages.

https://www.praxis-berghoff.de/lehrbuch ... pitel-3-1/

Henriëtte

[VerlorengezondheidM]

Risk of infection with Borrelia burgdorferi sensu lato for a host in relation to the duration of nymphal Ixodes ricinus feeding and the method of tick removal

O Kahl 1, C Janetzki-Mittmann, J S Gray, R Jonas, J Stein, R de Boer

Abstract

The objectives of the present study were to investigate the risk of B. burgdorferi s.1. (Bb)-transmission by I. ricinus-nymphs to a host (i) after different periods of feeding, and (ii) with regard to the particular method of tick removal. On each of 72 Mongolian gerbils 3 tick nymphs taken from a highly infected batch were allowed to feed in a small capsule. Feeding ticks were removed 16.7, 28.9, 47.0, and 65.2 hrs post-attachment. In each of these 4 groups 3 sub-groups with 6 gerbils each were deticked by (a) pulling ticks out with forceps without any pretreatment, (b) pulling ticks out after 3 min of intensive squeezing, and (c) applying nail polish to ticks 1.1 hrs before removal. The infection status in each gerbil was subsequently determined by larval xenodiagnosis. All gerbils with ticks removed > or = 47 hrs post-attachment were found to be infected. After 16.7 hrs as well as after 28.9 hrs of tick feeding, approximately 50% of the gerbils had acquired a transmissible infection, thus Bb-transmission to a host may even occur in the early phases of I. ricinus feeding. There is no evidence from this study that the tick removal method used has any significant influence on a host's Bb-infection risk.

Bron: pubmed.ncbi, lees meer

Lyme borreliosis: a review of data on transmission time after tick attachment

Michael J Cook

Abstract

Lyme borreliosis is increasing rapidly in many parts of the world and is the most commonly occurring vector-borne disease in Europe and the USA. The disease is transmitted by ticks of the genus Ixodes. They require a blood meal at each stage of their life cycle and feed on a wide variety of wild and domestic animals as well as birds and reptiles. Transmission to humans is incidental and can occur during visits to a vector habitat, when host mammals and their associated ticks migrate into the urban environment, or when companion animals bring ticks into areas of human habitation. It is frequently stated that the risk of infection is very low if the tick is removed within 24–48 hours, with some claims that there is no risk if an attached tick is removed within 24 hours or 48 hours. A literature review has determined that in animal models, transmission can occur in <16 hours, and the minimum attachment time for transmission of infection has never been established. Mechanisms for early transmission of spirochetes have been proposed based on their presence in different organs of the tick. Studies have found systemic infection and the presence of spirochetes in the tick salivary glands prior to feeding, which could result in cases of rapid transmission. Also, there is evidence that spirochete transmission times and virulence depend upon the tick and Borrelia species. These factors support anecdotal evidence that Borrelia infection can occur in humans within a short time after tick attachment.

Bron: NCBI, lees meer