Zohari, Siamak, Gyarmati, Péter, Ejdersund, Anneli, Berglöf, Ulla, Thorén, Peter, Ehrenberg, Maria, ...
Abstract Background Although the important role of the non-structural 1 ( NS ) gene of influenza A in virulence of the virus is well established, our knowledge about the extent of variation in the NS...
Vincent J. Munster, Chantal Baas, Pascal Lexmond, Jonas Waldenström, Anders Wallensten, Thord Fransson, ...
Although extensive data exist on avian influenza in wild birds in North America, limited information is available from elsewhere, including Europe. Here, molecular diagnostic tools were employed for...
Surveillance of influenza A virus in migratory waterfowl in northern Europe (2007)
Wallensten, Anders, Munster, Vincent J., Latorre-Margalef, Neus, Brytting, Mia, Elmberg, Johan, Fouchier, Ron A.M., ...
We conducted large-scale, systematic sampling of influenza type A virus in migratory waterfowl (mostly mallards [Anas platyrhynchos]) at Ottenby Bird Observatory, southeast Sweden. As with previous...
Jonas Bonnedahl, Tina Broman, Jonas Waldenström, Helena Palmgren, Taina Niskanen, Björn Olsen
We investigated the potential role of Antarctic tourism in the introduction of human-associated pathogens into Antarctic wildlife. We collected and analyzed 233 fecal samples from eight bird species....
Waldenström, Jonas, Broman, Tina, Carlsson, Inger, Hasselquist, Dennis, Achterberg, René P., Wagenaar, Jaap A., ...
A total of 1,794 migrating birds trapped at a coastal site in southern Sweden were sampled for detection of Campylobacter spp. All isolates phenotypically identified as Campylobacter jejuni and a...
Jan O. Lundström, Karin M. Lindström, Björn Olsen, Reija Dufva, Douglas S. Krakower
The Sindbis virus uses birds as vertebrate hosts in the summer amplification cycle, and the virus is transmitted by ornithophilic Culex species. Previous field and experimental studies have shown...
Gylfe, Åsa, Olsen, Björn, Straševičius, Darius, Marti Ras, Nuria, Weihe, Pál, Noppa, Laila, ...
This is the first report on the isolation of Lyme disease Borrelia from seabirds on the Faeroe Islands and the characteristics of its enzootic cycle. The major components of the Borrelia cycle...
Chlamydophila abortus in a Brown Skua (Catharacta antarctica lonnbergi) from a Subantarctic Island
Herrmann, Björn, Rahman, Rubaiyat, Bergström, Sven, Bonnedahl, Jonas, Olsen, Björn
On Bird Island, South Georgia, a new strain of Chlamydophila abortus was detected in one Brown skua out of 37 specimens from six different seabird species. Phylogenetic analysis of the rnpB and omp1...
Oscarsson, Jan, Westermark, Marie, Löfdahl, Sven, Olsen, Björn, Palmgren, Helena, Mizunoe, Yoshimitsu, ...
Cytolysin A (ClyA) is a pore-forming cytotoxic protein encoded by the clyA gene that has been characterized so far only in Escherichia coli. Using DNA sequence analysis and PCR, we established that...
Waldenström, Jonas, Broman, Tina, Carlsson, Inger, Hasselquist, Dennis, Achterberg, René P., Wagenaar, Jaap A., ...
A total of 1,794 migrating birds trapped at a coastal site in southern Sweden were sampled for detection of Campylobacter spp. All isolates phenotypically identified as Campylobacter jejuni and a...
Niskanen, Taina, Waldenström, Jonas, Fredriksson-Ahomaa, Maria, Olsen, Björn, Korkeala, Hannu
During spring and autumn migrations, 468 fecal samples from 57 different species of migratory birds were collected in Sweden. In total, Yersinia spp. were isolated from 12.8% of collected samples....
Avian Reservoirs and Zoonotic Potential of the Emerging Human Pathogen Helicobacter canadensis
Waldenström, Jonas, On, Stephen L. W., Ottvall, Richard, Hasselquist, Dennis, Harrington, Clare S., Olsen, Björn
A polyphasic identification approach was used to investigate the taxonomic position of Campylobacter-like isolates recovered from barnacle geese (Branta leucopsis) and Canada geese (Branta...
Protozoan Acanthamoeba polyphaga as a Potential Reservoir for Campylobacter jejuni
Axelsson-Olsson, Diana, Waldenström, Jonas, Broman, Tina, Olsen, Björn, Holmberg, Martin
We showed by a laboratory experiment that four different Campylobacter jejuni strains are able to infect the protozoan Acanthamoeba polyphaga. C. jejuni cells survived for longer periods when...
Fouchier, Ron A. M., Munster, Vincent, Wallensten, Anders, Bestebroer, Theo M., Herfst, Sander, Smith, Derek, ...
In wild aquatic birds and poultry around the world, influenza A viruses carrying 15 antigenic subtypes of hemagglutinin (HA) and 9 antigenic subtypes of neuraminidase (NA) have been described. Here...
Antimicrobial Resistance Profiles of Campylobacter jejuni Isolates from Wild Birds in Sweden†
Waldenström, Jonas, Mevius, Dik, Veldman, Kees, Broman, Tina, Hasselquist, Dennis, Olsen, Björn
In order to determine the occurrence and frequency of resistant strains of the bacterium Campylobacter jejuni and to establish baseline MICs in isolates from an environmental reservoir, the...
Gylfe, Åsa, Olsen, Björn, Straševičius, Darius, Marti Ras, Nuria, Weihe, Pál, Noppa, Laila, ...
This is the first report on the isolation of Lyme disease Borrelia from seabirds on the Faeroe Islands and the characteristics of its enzootic cycle. The major components of the Borrelia cycle...
Chlamydophila abortus in a Brown Skua (Catharacta antarctica lonnbergi) from a Subantarctic Island
Herrmann, Björn, Rahman, Rubaiyat, Bergström, Sven, Bonnedahl, Jonas, Olsen, Björn
On Bird Island, South Georgia, a new strain of Chlamydophila abortus was detected in one Brown skua out of 37 specimens from six different seabird species. Phylogenetic analysis of the rnpB and omp1...
Oscarsson, Jan, Westermark, Marie, Löfdahl, Sven, Olsen, Björn, Palmgren, Helena, Mizunoe, Yoshimitsu, ...
Cytolysin A (ClyA) is a pore-forming cytotoxic protein encoded by the clyA gene that has been characterized so far only in Escherichia coli. Using DNA sequence analysis and PCR, we established that...
Waldenström, Jonas, Broman, Tina, Carlsson, Inger, Hasselquist, Dennis, Achterberg, René P., Wagenaar, Jaap A., ...
A total of 1,794 migrating birds trapped at a coastal site in southern Sweden were sampled for detection of Campylobacter spp. All isolates phenotypically identified as Campylobacter jejuni and a...
Niskanen, Taina, Waldenström, Jonas, Fredriksson-Ahomaa, Maria, Olsen, Björn, Korkeala, Hannu
During spring and autumn migrations, 468 fecal samples from 57 different species of migratory birds were collected in Sweden. In total, Yersinia spp. were isolated from 12.8% of collected samples....
Avian Reservoirs and Zoonotic Potential of the Emerging Human Pathogen Helicobacter canadensis
Waldenström, Jonas, On, Stephen L. W., Ottvall, Richard, Hasselquist, Dennis, Harrington, Clare S., Olsen, Björn
A polyphasic identification approach was used to investigate the taxonomic position of Campylobacter-like isolates recovered from barnacle geese (Branta leucopsis) and Canada geese (Branta...
Protozoan Acanthamoeba polyphaga as a Potential Reservoir for Campylobacter jejuni
Axelsson-Olsson, Diana, Waldenström, Jonas, Broman, Tina, Olsen, Björn, Holmberg, Martin
We showed by a laboratory experiment that four different Campylobacter jejuni strains are able to infect the protozoan Acanthamoeba polyphaga. C. jejuni cells survived for longer periods when...
Fouchier, Ron A. M., Munster, Vincent, Wallensten, Anders, Bestebroer, Theo M., Herfst, Sander, Smith, Derek, ...
In wild aquatic birds and poultry around the world, influenza A viruses carrying 15 antigenic subtypes of hemagglutinin (HA) and 9 antigenic subtypes of neuraminidase (NA) have been described. Here...
Antimicrobial Resistance Profiles of Campylobacter jejuni Isolates from Wild Birds in Sweden†
Waldenström, Jonas, Mevius, Dik, Veldman, Kees, Broman, Tina, Hasselquist, Dennis, Olsen, Björn
In order to determine the occurrence and frequency of resistant strains of the bacterium Campylobacter jejuni and to establish baseline MICs in isolates from an environmental reservoir, the...
Munster, Vincent J, Baas, Chantal, Lexmond, Pascal, Waldenström, Jonas, Wallensten, Anders, Fransson, Thord, ...
Although extensive data exist on avian influenza in wild birds in North America, limited information is available from elsewhere, including Europe. Here, molecular diagnostic tools were employed for...
Fick, Jerker, Lindberg, Richard H., Tysklind, Mats, Haemig, Paul D., Waldenström, Jonas, Wallensten, Anders, ...
Oseltamivir is the main antiviral for treatment and prevention of pandemic influenza. The increase in oseltamivir resistance reported recently has therefore sparked a debate on how to use oseltamivir...
Acanthamoeba-Campylobacter Coculture as a Novel Method for Enrichment of Campylobacter Species▿
Axelsson-Olsson, Diana, Ellström, Patrik, Waldenström, Jonas, Haemig, Paul D., Brudin, Lars, Olsen, Björn
In this study, we present a novel method to isolate and enrich low concentrations of Campylobacter pathogens. This method, Acanthamoeba-Campylobacter coculture (ACC), is based on the intracellular...
Zohari, Siamak, Gyarmati, Péter, Ejdersund, Anneli, Berglöf, Ulla, Thorén, Peter, Ehrenberg, Maria, ...
Mycobacterium avium Lymphadenopathy among Children, Sweden
Thegerström, Johanna, Romanus, Victoria, Friman, Vanda, Brudin, Lars, Haemig, Paul D., Olsen, Björn
We studied Mycobacterium avium lymphadenopathy in 183 Swedish children (
Dissemination of Multidrug-Resistant Bacteria into the Arctic
Sjölund, Maria, Bonnedahl, Jonas, Hernandez, Jorge, Bengtsson, Stina, Cederbrant, Gunilla, Pinhassi, Jarone, ...
We show that Escherichia coli isolates originating from Arctic birds carry antimicrobial drug resistance determinants. This finding implies that dissemination of drug-resistant bacteria is worldwide....
Vancomycin-Resistant Enterococci, Point Barrow, Alaska, USA
Drobni, Mirva, Bonnedahl, Jonas, Hernandez, Jorge, Haemig, Paul, Olsen, Björn
Comstedt, Pär, Asokliene, Loreta, Eliasson, Ingvar, Olsen, Björn, Wallensten, Anders, Bunikis, Jonas, ...
Borrelia garinii, a causative agent of Lyme borreliosis in Europe and Asia, is naturally maintained in marine and terrestrial enzootic cycles, which primarily involve birds, including seabirds and...
Bonnedahl, Jonas, Drobni, Mirva, Gauthier-Clerc, Michel, Hernandez, Jorge, Granholm, Susanne, Kayser, Yves, ...
Detection of the Antiviral Drug Oseltamivir in Aquatic Environments
Söderström, Hanna, Järhult, Josef D., Olsen, Björn, Lindberg, Richard H., Tanaka, Hiroaki, Fick, Jerker
Oseltamivir (Tamiflu®) is the most important antiviral drug available and a cornerstone in the defence against a future influenza pandemic. Recent publications have shown that the active metabolite,...
Surveillance of Influenza Virus A in Migratory Waterfowl in Northern Europe
Wallensten, Anders, Munster, Vincent J., Latorre-Margalef, Neus, Brytting, Mia, Elmberg, Johan, Fouchier, Ron A.M., ...
Ducks may maintain influenza virus from 1 year to the next.