Netherlands: Tiger Mosquito is back; no Arbovirus infections found

[Gert van der Hoek]

Report from april 2008;

Relevant because some reports in UK Press say "tigermosquito's are present in the Netherlands". This is true, however these mosquito's were imported, did not breed. Also the "Lucky Bamboo" plants are imported in gel these days, not in water like before. This is done to prevent mosquito's to travel to Europe. Not sure if this really prevents the mosquito's coming in.

Abstract

Import of tigermosquitos in the Netherlands

Since 2005 the tigermosquito, Aedes albopictus, has been occasionally found in green houses with Lucky bamboo plants which are imported into the Netherlands from south China.

As the tigermosquito is a vector for arboviruses such as dengue and Chikungunya, and dengue is endemic in south China, research is conducted to determine the settlement of the mosquito in the Netherlands.

Although Aedes albopictus is occasionally found, there are no indications of arbovirus infection yet. However, vigilance is needed as long as mosquitoes are being imported.


Tiger mosquito's were found in these countries:





More (in Dutch):

http://www.rivm.nl/cib/publicaties/bulletin/jaargang_19/bull1903/tijgermug.jsp

http://www.google.com/language_tools?hl=en

 

[tropical]

Re: Netherlands: no arbovirus infections found (study)

Re: Netherlands: no arbovirus infections found (study)

"however these mosquito's were imported, did not breed"

Looking at the complete colonizzation of Italy by that "imported" tiger, if they indeed didn't breed in Netherlands, probably they would after more climate warmings of the area.

 

[Gert van der Hoek]

Re: Netherlands: no arbovirus infections found (study)

Re: Netherlands: no arbovirus infections found (study)

"however these mosquito's were imported, did not breed"

Looking at the complete colonizzation of Italy by that "imported" tiger, if they indeed didn't breed in Netherlands, probably they would after more climate warmings of the area.

Yes, that could be a serious possibility.

 

[Gert van der Hoek]

Re: Netherlands: no arbovirus infections found (study)

Re: Netherlands: no arbovirus infections found (study)

Tiger mosquito back in the Netherlands

Tuesday 15 July 2008

The Asian tiger mosquito (Aedes albopictus) has again been spotted in the Netherlands, the farm and environment institute CLM said on Tuesday.

The mosquito, which spreads dengue fever, has been spotted in several greenhouses where ornamental bamboo is being cultivated, news agency ANP reports.

Last year, plant importers were warned to take steps to eradicate the eggs and larvae.

Dengue fever leads to fever, headaches and muscle pain and sometimes a rash. The mosquito takes its name from its black and white striped legs.

http://www.dutchnews.nl/news/archives/2008/07/tiger_mosquito_back_in_the_net.php

More details on tiger mosquito's in the Netherlands, including results of research here: http://www.tijgermug.info/

Website in Dutch; Google Language Tools can help you to translate.

 

[Gert van der Hoek]

Re: Netherlands: no arbovirus infections found (study)

Re: Netherlands: no arbovirus infections found (study)

A critical note, stating Dutch Authorities are reacting slow and inadequate against the import of Tiger Mosquito's .


machinetranslated

Almost all Political Parties, in Parliament on February 12, 2008 adopted a motion to prohibit the import of tige mosquito's; to stop by the Lucky bamboo in quarantine. By letter dated March 28, 2008, the Minister informed the Lower House that he ignored the motion.

Quarantine would be difficult not only feasible but also unnecessary, because the policy claims to have been successful. Since October 2007 are no longer tijgermuggen found in traps in the Lucky bamboo-greenhouses.
This argument lacks sufficient substantiation.

The policy can only be called successful if no tiger mosquito's , in any form whatsoever (egg, larva, pop or adult), introduced in the Netherlands and
if all tijgermuggen which may in and outside the greenhouses have been distributed eradicated.

The minister has not yet demonstrated that this is the case.

The only event where the minister his "success story" on bases, is that there is no tigermosquito's since October 2007, more traps were found. But with falling only adults caught, and only ones in the Lucky bamboo-flying greenhouses.

This catch say nothing about:

the possible presence of adults outside the greenhouses [* /]

the presence of eggs, larvae and pupae in the greenhouses or elsewhere.

As for the adults in the greenhouses, the researchers RIVM, PD and WUR in their report of August 2007 explicitly states that "no tijgermug in the fall" still does not mean "no tijgermug in the greenhouse.

The researchers themselves have seen that sometimes tigermosquito's were flying around near the trap, but there were not trapped. In the meantime, the mosquitoes opportunity to workers in the greenhouses in stabbing (this is dozens of times by the researchers recorded).

In fact, in the only two companies, which have never been a tijgermug in the fall had been found, the employees in the greenhouses still had experienced inconvenience of tigermosquito's.

After the flying mosquitoes what the employees have blood drained, they can lay hundreds of eggs that are barely visible. The eggs are then larvae. Also provided by the researchers found in water containers where no Lucky bamboo in had been. These larvae are never counted with the catch.

The researchers have also noted that importers regularly use pesticides to the tijgermuggen-nuisance to limit, even though there was a fall in the greenhouse. And mosquitoes that are destroyed, are obviously not in the fall correctly. The fall thus inconclusive about the absence of tijgermuggen.

There are also regularly found defective traps, and there are even indications that importers sometimes sabotage the trap, so there is no tiger mosquito brought into. That could, for example by gauze for the effect to work on days when there is no check was to be expected.

All in all, from the mere fact that in the fall tijgermuggen no longer be found, not be concluded that there is no tijgermuggen (in whatever form) are imported. The minister will be rulings on the "tijgermuggenvrije" situation which, according to him since October 2007 is therefore need support with, among others:
Data m.b.t. zichtwaarnemingen of tijgermuggen in the greenhouses
Data m.b.t. tijgermuggen-nuisance to the workers
Data m.b.t. defective fall
Data m.b.t. fall where sabotage is suspected, and the measures taken there are
Data m.b.t. the presence of tijgermuggen (in whatever form) outside the greenhouses and the control thereof

The Ministry of Health has indicated that this information since October 2007 no longer be collected by the researchers, because this is not part of the new study in August 2007 by the Ministry to provide the PD.

All in all, from the mere fact that since October 2007 in the fall tijgermuggen not been found, not be concluded that since that time no tijgermuggen (in whatever form) are imported.

http://www.tijgermug.info/main.php?pg=9

 

[Gert van der Hoek]

Re: Netherlands: no arbovirus infections found (study)

Re: Netherlands: no arbovirus infections found (study)

Apparently Tiger Mosquito's can be destroyed with the current pesticides, however larvea not. The temporary use of an other pesticide has been allowed. Swift action. No word on more control of imports of "lucky bamboo".

Holland is a centre of trade in flowers and plants, millions of "lucky bamboo" plants (not bamboo..; http://en.wikipedia.org/wiki/Dracaena_sanderiana ) are transported every year.


machinetranslation

17/07/2008

Again temporary exemption for pesticide against tiger mosquito

At the request of Minister of Health, Welfare and Sport Klink, Minister Cramer of the Environment in consultation with Minister of Agriculture Verburg decided to exempt from the ban on the use of biocides on the basis of the active ingredient Bacillus thuringiensis israeliensis in connection with the fight against the larvae of the Asian Tiger Mosquito. The exemption is granted for the duration of 120 days.

The adults of the Asian Tiger Mosquito can be destroyed with the current pesticides. Bacillus thuringiensis israeliensis is currently the only available active substance that is sufficiently effective against the larvae of the Asian Tiger Mosquito, but in the Netherlands had the means Vectobac AS 12 on the basis of this active substance no admission. At the request of Minister of Health Klink is now an exemption granted.

The Ministry of Health suggests that imports and the establishment of the Asian tijgermug should be, in connection with a major danger to public health.

The Asian tijgermug can carriers of the dengue virus that ao (Dengue virus) and can cause meningitis. These diseases are dangerous to humans and can cause death.

With the fight against the larvae of the Asian tijgermug is the one that achieved the larvae can not develop into mature specimens and in particular workers in greenhouses can stabbing, the other is establishment of this mug in the Netherlands.

http://www.agriholland.nl/nieuws/artikel.html?id=92180

 

[Gert van der Hoek]

Re: Netherlands: no arbovirus infections found (study)

Re: Netherlands: no arbovirus infections found (study)

Apparently Tiger mosquito's are flying around in some area's in Holland, in this case inside a school.

Tiger mosquito is settling in

July 22, 2008


He is roaming around in the Netherlands: tigermosquito. The first were reported last week. From tropical areas lift he secretly along with passengers, in old tyres and a plant known as lucky bamboo. One bite can cause the dengue disease (dengue). Chances are that the insect will stay here .

Pats! In a blow is the mosquito knocked out during a meeting at a school in Pijnacker. The place to land has poorly been chosen by the insect: on the arm of Dr. Jan Hendrik Richardus, associate professor of Social Health of the Erasmus University Medical Center.

He says: "I have lived for years in northern Thailand, where I am involved in leprosy control. At a glance I knew that this was an Asian tigermosquito, who denguevirus can convey these so-called Aedes Albopictus there is frequent.

Almost at that meeting I wanted to jump and call against the others call: "This animal does not belong here! Do you know what this means? "This is now a half years ago. It was of course in an area with greenhouses, full of plants from exotic places. That would be the origin of that mosquito one can explain. "

The department of social health of the Erasmus University Medical Center in Rotterdam develop under other models for the transmission and spread of tropical diseases mainly to describe the effects of control and evaluate. HIV, tuberculosis and parasitic helminth are the main diseases that this section map. Is dengue soon also be part of this illustrious list?

Richardus: "It is one of the most prevalent infectious diseases in the world. In the second half of the twentieth century are the disseminators of the virus-infected mosquitoes-uitgewaaierd further on the continents. Doctors in the Netherlands should be on alert if they take a patient with fever that has just returned from the tropics. The popularity of travel to the infection is increasing, and thus the risk of dengue infection. The diagnosis is now easily missed. Or people think that they are an ordinary flu among members, while they are actually infected. "

So far, the diagnosis in the Netherlands a few dozen times a year. A onderreportage, because the chance of dengue to run in an infected area in Asia is similar to those on malaria in Africa.

Import

There is also the dissemination through imports. Often it is unexpected goods such as old tyres which the whole world about to be towed recycling. The leftovers water in the bands may contain larvae. Alarmerender Richardus is that the Asian tijgermug in 2005 was first found by importers of lucky bambooplanten from Southeast China. For several years, these ornamental plants popular in Europe, they are not related to the real bamboo. "The trade is mainly through our country, where the plants are raised in greenhouses in the Westland. Any eggs are nestled in the importwater and the lower leaves of the cutting. Preventive measures should the risk for employees in the customs and in the greenhouses limit and are now on the cutting gel instead of water. "

The risk to import an infected mosquito bites to run, according Richardus low, but nonetheless real. "Klimaatscenario of the RIVM show that the Asian tijgermug does not impede down here ironing. Even the coldest winter that we in the past decade experienced by January 2006, they have survived. The larvae can thus for a long time our relatively 'hot' cold passed. "

Emerging

Then there is a development linked to global warming, says Richardus. The encroachment of Asia and Africa Aedes Albopictus has been foot on the ground in southern Italy. And that while his brother, the Aedes aegypti, named after its official ontdekkingsplaats, only since the end of the nineteenth century from the Mediterranean European countries has disappeared. In port cities like Lisbon there are plenty of these mosquito's; water were his ideal breeding ground. Thanks to improved sanitation, sewers and water treatment he is in the twentieth century no longer reported.

It is likely that the Asian Tigermosquito now through southern Europe to the northern regions of the continent will spread, like that has happened in the U.S.. "The patterns are there already. Then one plus one two. The question is not whether, but when it happens. It may take about a year or ten. Compare the rise of the tick that causes Lyme disease. Twenty years ago who came here still barely sign. Now the woods are full of infected animals. These insects have the current climatic conditions, and does not withdraw from land. "

soldiers

Richardus: "It is unpleasant but true: there is only good research into tropical diseases done if the West is hit. Or the army, because in the past, most expatriate soldiers died not by war but by local conditions. Even when the studies dengue names a high flight during the Second World War, when British soldiers fought in India, and at the time of the war that claimed the Americans in Vietnam. "

Researchers are now trying to determine how it is that the 2nd dengue infection often leads to serious symptoms: haemorragische dengue (DHF / DSS). The theory is that the body creates antibodies that after an initial infection bind to a virus with a new serotype (denguevariant), these anti-viruscomplexen cause a severe reaction of the immune system. Complicated matter, that finding a vaccine it will not be facilitated.

http://www.refdag.nl/artikel/1353093/Tijgermug+burgert+in.html

 

[WillemFE]

Re: Netherlands: Tiger Mosquito is back; no Arbovirus infections found

Report from april 2008;

Relevant because some reports in UK Press say "tigermosquito's are present in the Netherlands". This is true, however these mosquito's were imported, did not breed. Also the "Lucky Bamboo" plants are imported in gel these days, not in water like before. This is done to prevent mosquito's to travel to Europe. Not sure if this really prevents the mosquito's coming in.

It is sure that importing in gel doesn't prevent tiger mosquitoes traveling to Europe. Most tiger mosquitoes were found at nurseries that import Lucky bamboo in gel.

 

[sharon sanders]

Re: Netherlands: Tiger Mosquito is back; no Arbovirus infections found

Welcome WillemFE!

 

[Sally Furniss]

Re: Netherlands: Tiger Mosquito is back; no Arbovirus infections found

Welcome WillemFE


Survival of larvae appears to be reduced in gel. Adding larvicide would help

BROMELIADS and MOSQUITOS By: Rob Smythe M.Sc.
http://fcbs.org/articles/mosquito1.htm

Water Crystals

1. Very good in shaded areas.
2. Breaks down faster in hot areas.
3. Good for holidays.
4. Does not wash out in rain.

<dir> My observations
Non-toxic to wrigglers so they will survive if placed in wells with crystals.
Small wrigglers not inhibited. Larger wrigglers can get into trouble. Some get trapped and die but not all.
Broms filled with gel to near the surface wrigglers tend to die from overheating.
An experiment completed by me showed that not one ant would drink water where gel was present. Even low levels like 20% gel in the water are avoided completely by green ants. They drank only from the control flasks which had no gel.
An experiment to see if mossies breed in water with gel present is now completed. I have sterilized the water using the same samples that I previously had wrigglers in. Microwaved a couple of times to destroy wrigglers and possible predators. Three months on none of the gel containing containers developed mosquito larvae. Three control (no gel) flasks all developed mosquito larvae. I have a feeling that fresh gel does not work so well. I need to check this out.


</dir>

The polymer gel are also known as water crystals. Water is added to the gel granules, the absorb up to 10 times their weight or volume with water.<dir>
</dir>

 

[tropical]

Re: Netherlands: Tiger Mosquito is back; no Arbovirus infections found

#7:
"...
It is likely that the Asian Tigermosquito now through southern Europe to the northern regions of the continent will spread, like that has happened in the U.S.. "The patterns are there already. Then one plus one two. The question is not whether, but when it happens. It may take about a year or ten. Compare the rise of the tick that causes Lyme disease. Twenty years ago who came here still barely sign. Now the woods are full of infected animals. These insects have the current climatic conditions, and does not withdraw from land. "
..."

 

[Gert van der Hoek]

Re: Netherlands: Tiger Mosquito is back; no Arbovirus infections found

It is sure that importing in gel doesn't prevent tiger mosquitoes traveling to Europe. Most tiger mosquitoes were found at nurseries that import Lucky bamboo in gel.

Thanks WillemFE, I could not agree more. More information on this at this website:

http://www.tijgermug.info/

in particular:

http://www.tijgermug.info/scripts/downloadpdf.php?file=pdf/PD-memo.pdf

 

[Gert van der Hoek]

Re: Netherlands: Tiger Mosquito is back; no Arbovirus infections found

October 3, 2008

Holland is stepping up surveillance of Tiger Mosquito's .

Not only in greenhouses with Lucky Bamboo, also at some places near highways, were trucks park coming from southern Europe.

Also imported used tyres could be a way for the mosquito's to travel here.

Some links leading to recent information in Dutch, including a letter (pdf) of Director of RIVM (Nat Inst. Inf. Diseases) to Dep of Health, summarising a meeting of experts and urging for more surveillance and immediate action if mosquito's or eggs are found:

http://www.bndestem.nl/algemeen/binnenland/3811639/Tijgermug-durft-grens-nog-niet-over.ece

http://www.rtl.nl/(/actueel/rtlnieu...er/01/binnenland/1001_1930_tijgermug_rivm.xml

http://media.rtl.nl/web/components/actueel/rtlnieuws/psp/extra/2008/tijgermug.pdf

 

[Gert van der Hoek]

Re: Netherlands: Tiger Mosquito is back; no Arbovirus infections found

Abstract:

The increasing importance of vector-borne diseases in the Netherlands.

The last few years Europe faced outbreaks of several ?new? vector-borne diseases, such as bluetongue and Chikungunya, transmitted by endemic or newly introduced arthropods.

The changes in the environment contribute to the survival and further spread of certain arthropods. This increases the risk of the spreading of vector-borne diseases in Europe, such as Lyme disease and tick-borne encephalitis (TBE).

Also the chances for survival and spread of exotic vectors, such as the Asian tiger mosquito and the tick Dermacentor reticulates, increases. Already in 2004 the Dutch Health Council mentioned that vector-borne diseases will become more important in the near future, and knowledge in this field should improve.

On initiative of the Food and Consumer Product Safety Authority and the Centre for Infectious Disease Control Netherlands a working group of scientists and policymakers of various disciplines within the field of vectors and vector-borne diseases was founded.

Sharing knowledge in this field should eventually lead to a faster response to new threats. In this article we describe the most important arthropod vectors and their transmitted infectious diseases regarding the Netherlands.

More (in Dutch) :

Infectieziekten Bulletin jaargang 19 nummer 10 2008

http://www.rivm.nl/cib/publicaties/bulletin/jaargang_19/bull1910/vectoroverdraagbare-ziekten.jsp

 

[Gert van der Hoek]

Re: Netherlands: Tiger Mosquito is back; no Arbovirus infections found

De tijgermug is dit jaar voor het eerst in "een niet afgesloten ruimte" aangetroffen. Een ander woord voor "buiten" denk ik zo. Te lezen in de brief van minister Klink aan de 2e Kamer.

Het commentaar van Bart Knols liegt er niet om. Er is in Nederland denk ik niemand te vinden, die meer weet van muggen dan Bart Knols.

Aanvulling: Tijgermuggen kunnen diverse ziektes overbrengen, o.a. dengue (knokkelkoorts), chikungunya en het West Nijlvirus; meer over uitbraken van het West Nile virus o.a. in Europa hier: http://www.flutrackers.com/forum/forumdisplay.php?f=549

Overigens wordt het West Nijl virus vooral overgebracht door de gewone steekmuggen.


Machinetranslation in English

Tropische muggen na jaar aangepakt

30-07-2010 14:41 | gewijzigd 30-07-2010 17:47 | Wetenschapsredactie

RIJSWIJK – Het Centrum Monitoring Vectoren (CMV) is donderdagavond op drie plaatsen in Noord-Brabant begonnen met de bestrijding van drie exotische muggensoorten.

Dat maakte het ministerie van Volksgezondheid gisteren bekend. Tijdens reguliere controles zijn muggen en larven van de Aziatische tijgermug, de Amerikaanse bandenmug en de Gele koortsmug aangetroffen bij importeurs van gebruikte banden.

Het CMV controleert sinds 2008 langs diverse snelwegen in Nederland en sinds 2009 bij bedrijven die handelen in gebruikte autobanden. Bij bedrijven die de plant lucky bamboo importeren bestaan al langer controles (sinds 2006) en wordt de tijgermug actief bestreden in de kassen.

De bestrijding heeft plaats op advies van het Rijksinstituut voor Volksgezondheid en Milieu. Nog geen van de aangetroffen muggen is drager van ziekteverwekkende virussen of parasieten.


Medisch entomoloog Bart Knols, die een boek schreef over het gevaar van tropische muggen in Nederland, reageert cynisch op de bekendmaking van VWS. „De Amerikaanse Bandenmug werd al in augustus 2009 in Brabant aangetroffen. Het heeft een jaar geduurd voordat de drie betrokken ministeries –VROM, VWS en LNV– daadkracht tonen. Dat kun je geen adequaat optreden noemen.”

Volgens Knols is ook elders in Europa geprobeerd de muggen te bestrijden nadat ze vaste voet aan de grond hadden gekregen. „Op veel plaatsen was de vestiging van de muggen definitief.”

Knols citeert uit een brief van minister Klink waarin deze er op wijst dat de muggen „geen groot gevaar voor de volksgezondheid opleveren.” Knols: „Klink bagatelliseert de situatie. Exotische muggen zijn potentiële verspreiders van infectieziekten, zoals het Westnijlvirus en Knokkelkoorts (Dengue). „Het Westnijlvirus veroorzaakt in de VS jaarlijks duizenden ziektegevallen en tientallen doden.”

http://www.refdag.nl/nieuws/binnenland/tropische_muggen_na_jaar_aangepakt_1_493929


Persbericht ministerie van VWS : http://www.rijksoverheid.nl/ministe...0/bestrijding-exotische-muggen-van-start.html


Brief aan de 2e Kamer - 30-07-2010 : http://www.rijksoverheid.nl/ministe...-kamer-over-bestrijding-exotische-muggen.html

.

 

[Gert van der Hoek]

Re: Netherlands: Tiger Mosquito is back; no Arbovirus infections found

Wilfred Reinhold blogt over dieren en planten die niet thuis horen in Nederland.

Zijn commentaar i.v.m. de recente vondst van de `verkeerde`muggen kunt u hier lezen:


Tijgermuggen nu ook via banden ingevoerd

 

[Gert van der Hoek]

Re: Netherlands: Tiger Mosquito is back; no Arbovirus infections found

Zoektocht naar 'zieke' muggen gaat door

EINDHOVEN - In Brabant zijn de afgelopen maanden nog geen muggen met een ziekteverwekkend virus gevonden. Wel zijn vele dode larven van deze exotische insecten gevonden.

De larven zijn het slachtoffer geworden van bestrijdingsmiddelen, die muggenvangers hebben gebruikt. De zoektocht naar muggen bij bandenhandelaren in Heijningen, Oosterhout en Oss gaat voorlopig door.

De exotische muggen kunnen tropische ziekten overbrengen.

Aanleiding voor het onderzoek was de vondst eind juli van drie van die muggen. De Amerikaanse rotspoelmug werd aangetroffen in Oss. In Heijningen en Oosterhout werden de Aziatische tijgermug en de gelekoortsmug gevangen.

http://www.omroepbrabant.nl/?news/1417771173/Zoektocht+naar+zieke+muggen+gaat+door.aspx

 

[Gert van der Hoek]

Re: Netherlands: Tiger Mosquito is back; no Arbovirus infections found

Ontleend aan: http://invasieve-exoten.nieuwslog.nl

‘Exotische muggen moeten eerder en steviger worden aangepakt’


09.09.10

Bart Knols, entomoloog bij de Universiteit van Amsterdam en schrijver van het boek Mug, roept de Tweede Kamer en de betrokken ministeries op om de problematiek van invasieve exotische muggen serieus te nemen. Er moet veel sneller en krachtdadiger worden opgetreden om vestiging van de muggen en de daarmee gepaard gaande gezondheidsrisico’s te voorkomen.

---

Ernst Jan Scholte, coördinator bestrijding bij het ministerie van LNV, meldt dat bij de bandenimporteurs waar exotische muggen zijn gevonden, terughoudend wordt omgegaan met de inzet van chemische middelen tegen de volwassen muggen. Dit vanwege de bijwerkingen van het middel. Volgens Scholte bestaat er voor bandenimporteurs die gezondheidsbedreigende muggen invoeren geen wetgeving en wordt er nog nagedacht over maatregelen om deze invoerroute aan te pakken.

Knols waarschuwt dat met alle afstemming tussen ministeries en al het gepolder in Nederland veel tijd verloren gaat. De exotische muggen krijgen daardoor steeds meer kans om zich hier te vestigen en voor altijd hier te blijven.

Volledige bericht: http://invasieve-exoten.nieuwslog.n...ten_eerder_en_steviger_worden_aangepakt_.html

 

[Gert van der Hoek]

Re: Netherlands: Tiger Mosquito is back; no Arbovirus infections found

Correctie: niet de primeur. In de vorige eeuw vonden diverse dengue epidemieën plaats in Griekenland.


Frankrijk heeft Europese primeur: de 1e dengue patient

In Frankrijk is de eerste patient met dengue koorts (knokkelkoorts) gevonden die in Frankrijk zelf is besmet.

Tot nu toe zijn de dengue patienten in Europa elders besmet geraakt, de ziekte werd na thuiskomst ontdekt. Ook in Nederland komen jaarlijks 10-tallen mensen thuis met een bijzonder souvenir: dengue.

Het virus wordt van mens op mens overgebracht door muggen, meer in het bijzonder de zgn "tijgermug". In het zuiden van Europa is deze mug aan een opmars bezig.

Onlangs werden de 1e tijgermuggen ook in Nederland aangetroffen. In ons land worden deze muggen ingevoerd via planten uit China of 2e-hands autobanden.

Het is niet uitgesloten dat vrachtwagens ook deze lifter mee kunnen nemen.

Als het klimaat bij ons warmer wordt, zou de tijgermug zich ook in Nederland kunnen gaan thuisvoelen.

In 2007 vond in Italië een uitbraak plaats van "Chikungunya" , wordt ook door muggen overgebracht. Simpel gezegd: een ziekte vergelijkbaar met Dengue, maar dan meestal milder. Iemand nam de ziekte mee uit het buitenland en vervolgens raakten meer dan 200 mensen besmet.
Meer hierover is hier te lezen.

Een herhaling van deze uitbraak - eventueel ook met dengue - is niet denkbeeldig. Daarom worden in Italië meteen maatregelen genomen als iemand gevonden is met een dengue of chikungunya besmetting: Gemeenten gaan spuiten tegen muggen; mensen worden opgeroepen om rond huis en tuin geen druppel open water (vijvers, schoteltje onder een bloempot enz. enz.) te laten staan. Een tijgermug heeft aan een omgekeerde flessendop met water voldoende om zich voort te planten.

In Nederland hebben we water zat, dus als die mug eenmaal hier is, kunnen we onze lol op. Deze mug houdt niet van grotere oppervlakten water, zoals sloten en plassen. Bij voorkeur plant de tijgermug zich voort in kleine plasjes water, zoals in bijvoorbeeld in dakgoten, regentonnen, bloempotten, maar ook in zwerfvuil, zoals blikjes, plastic of flessendoppen.


Bron (Francais)

Report in English

Wat is Dengue?

RIVM over Dengue

Een rapport van Eurosurveillance:

11 Maart 2010

YELLOW FEVER AND DENGUE: A THREAT TO EUROPE?

Full report

Lessons from the Greek dengue epidemic of 1927-1928

.

 

[Gert van der Hoek]

Re: Netherlands: Tiger Mosquito is back; no Arbovirus infections found

Het in de gaten houden en bestrijden van muggen die ziekten kunnen overbrengen, zoals de tijgermug, valt (mede) onder de verantwoordelijkheid van het CIB (Centrum Infectieziekten Bestrijding), onderdeel van het RIVM.

In de praktijk hebben zowel het ministerie van VWS (Volksgezondheid) als LNV (Landbouw, ivm agrarische aspecten: import van planten) bemoeienis met het beleid. Ook het VWA is er bij betrokken. De vraag is of er sprake is van voldoende coördinatie.

Zie ook:

Centrum Monitoring Vectoren

Nationale Vector Survey 2010




Uit het werkplan 2010 van het CIB, onderdeel over muggen & teken (blz 26):

Vectoroverdraagbare aandoeningen

In 2010 zal het CIb investeren in de uitbreiding van kennis en expertise op het gebied van vector-borne
infecties. De activiteiten zullen zich richten op de surveillance van vectoren in samenwerking met de
Plantenziektekundige Dienst/Centrum Monitoring Vectoren, het ontwikkelen van (moleculaire)
detectiemethoden van pathogenen in muggen en teken, het bestuderen van introductie en trends van
tekenoverdraagbare pathogenen en het opzetten en uitbreiden van moleculaire epidemiologische
databases van vector-overdraagbare pathogenen.

Daarnaast maakt het CIb een begin met het ontwikkelen en implementeren van bestrijdings- en
interventiemogelijkheden voor vectoroverdraagbare aandoeningen in Nederland. Dit gebeurt voor
hoofdluis door het opzetten van resistentiebepalingen en voor steekmuggen door een bestrijdingsplan
te schrijven. Ook internationaal zal het CIb actief zijn. Onder andere in het ECDC-project Vbornet dat als
doel heeft het ontwikkelen van een netwerk van experts op het gebied van vectoren en vectoroverdraagbare
infectieziekten in Europa.

Dit jaar nog wordt een rapport verwacht :

"Generiek bestrijdingsplan steekmuggen"