Anna Bajer


Affiliation: Warsaw University
Country: Poland


  1. Bajer A, Welc Faleciak R, Bednarska M, Alsarraf M, Behnke Borowczyk J, Sinski E, et al. Long-term spatiotemporal stability and dynamic changes in the haemoparasite community of bank voles (Myodes glareolus) in NE Poland. Microb Ecol. 2014;68:196-211 pubmed publisher
    ..For some genera, host age was shown to play an important role, but a significant effect of host sex was found only for Haemobartonella spp. ..
  2. Mierzejewska E, Dwużnik D, Bajer A. Molecular study of transovarial transmission of <i>Babesia canis</i> in the <i>Dermacentor reticulatus</i> tick. Ann Agric Environ Med. 2018;25:669-671 pubmed publisher
    ..However, the efficiency of transovarial transmission in the maintenance of <i>B. canis</i> in natural conditions requires further field research. ..
  3. Tołkacz K, Alsarraf M, Kowalec M, Dwużnik D, Grzybek M, Behnke J, et al. Bartonella infections in three species of Microtus: prevalence and genetic diversity, vertical transmission and the effect of concurrent Babesia microti infection on its success. Parasit Vectors. 2018;11:491 pubmed publisher
    ..Bartonella taylorii clade B was found to be the dominant species in wild-caught voles, including pregnant females and dams, and in their offspring, and was also found to be the most successful in vertical transmission. ..
  4. Bajer A, Bednarska M, Caccio S, Wolska Kusnierz B, Heropolitanska Pliszka E, Bernatowska E, et al. Genotyping of Cryptosporidium isolates from human clinical cases in Poland. Parasitol Res. 2008;103:37-42 pubmed publisher
    ..This study has revealed a high prevalence of Cryptosporidium infection in hospitalised patients in Poland and confirmed that molecular techniques enable a more sensitive detection of the parasite. ..
  5. Bajer A, Alsarraf M, Bednarska M, Mohallal E, Mierzejewska E, Behnke Borowczyk J, et al. Babesia behnkei sp. nov., a novel Babesia species infecting isolated populations of Wagner's gerbil, Dipodillus dasyurus, from the Sinai Mountains, Egypt. Parasit Vectors. 2014;7:572 pubmed publisher
    ..microti. Babesia behnkei n. sp. is a novel species of the 'Duncani group' maintained in isolated populations of Dipodillus dasyurus occurring in the Sinai Mountains of Egypt. ..
  6. Bednarska M, Bajer A, Welc Falęciak R, Pawełas A. Cyclospora cayetanensis infection in transplant traveller: a case report of outbreak. Parasit Vectors. 2015;8:411 pubmed publisher
    ..A co-infection with Blastocystis hominis was identified in the immunocompetent man. Infection of C. cayetanensis shall be considered as the cause of prolonged acute diarrhoea in immunocompromised patients returning from endemic regions. ..
  7. Mierzejewska E, Pawełczyk A, Radkowski M, Welc Falęciak R, Bajer A. Pathogens vectored by the tick, Dermacentor reticulatus, in endemic regions and zones of expansion in Poland. Parasit Vectors. 2015;8:490 pubmed publisher
    ..reticulatus from the endemic areas and newly inhabited expansion zones. The differences were likely associated with the different time of settlement or 'source' of ticks populations, the Eastern and the Western one. ..
  8. Mierzejewska E, Alsarraf M, Behnke J, Bajer A. The effect of changes in agricultural practices on the density of Dermacentor reticulatus ticks. Vet Parasitol. 2015;211:259-65 pubmed publisher
    ..The highest tick densities were recorded on the fallow lands, and the lowest - on the grazed pastures. Tick densities were up to 10 × times higher on the control sites compared to neighboring post-fire sites. ..
  9. Bajer A, Rodo A, Mierzejewska E, Tołkacz K, Welc Faleciak R. The prevalence of Dirofilaria repens in cats, healthy dogs and dogs with concurrent babesiosis in an expansion zone in central Europe. BMC Vet Res. 2016;12:183 pubmed publisher
    ..The possible protective effect of the nematode infection against hepatic or renal failure in canine babesiosis and its mechanisms require further investigations. ..

More Information


  1. Tołkacz K, Bednarska M, Alsarraf M, Dwużnik D, Grzybek M, Welc Faleciak R, et al. Prevalence, genetic identity and vertical transmission of Babesia microti in three naturally infected species of vole, Microtus spp. (Cricetidae). Parasit Vectors. 2017;10:66 pubmed publisher
    ..microti positive embryos (20/27; 74%) and pups (12/17; 71%). A high rate of vertical transmission of the two main rodent genotypes of B. microti was confirmed in two species of naturally infected voles, M. arvalis and M. oeconomus. ..
  2. Bajer A. Between-year variation and spatial dynamics of Cryptosporidium spp. and Giardia spp. infections in naturally infected rodent populations. Parasitology. 2008;135:1629-49 pubmed publisher
    ..These data are discussed in relation to the parasite genotypes identified in this region and in respect of the role of various ecological factors in shaping of intestinal protozoa communities...
  3. Bajer A, Bednarska M, Rodo A. Risk factors and control of intestinal parasite infections in sled dogs in Poland. Vet Parasitol. 2011;175:343-50 pubmed publisher
    ..The present study has demonstrated a high prevalence of intestinal parasites in working sled dogs in Poland, including the zoonotic human pathogens Toxocara or Cryptosporidium...
  4. Bajer A, Mierzejewska E, Rodo A, Bednarska M, Kowalec M, Welc Faleciak R. The risk of vector-borne infections in sled dogs associated with existing and new endemic areas in Poland: Part 1: A population study on sled dogs during the racing season. Vet Parasitol. 2014;202:276-86 pubmed publisher
    ..Our results emphasize the need for regular monitoring for the presence of D. repens. ..
  5. Alsarraf M, Bednarska M, Mohallal E, Mierzejewska E, Behnke Borowczyk J, Zalat S, et al. Long-term spatiotemporal stability and dynamic changes in the haemoparasite community of spiny mice (Acomys dimidiatus) in four montane wadis in the St. Katherine Protectorate, Sinai, Egypt. Parasit Vectors. 2016;9:195 pubmed publisher
  6. Bajer A, Rodo A, Alsarraf M, Dwużnik D, Behnke J, Mierzejewska E. Abundance of the tick Dermacentor reticulatus in an ecosystem of abandoned meadows: Experimental intervention and the critical importance of mowing. Vet Parasitol. 2017;246:70-75 pubmed publisher
    ..reticulatus ticks in open areas. Cessation of mowing may enhance the number of ticks and the associated risk of acquiring tick-borne diseases. ..
  7. Kowalec M, Szewczyk T, Welc Faleciak R, Sinski E, Karbowiak G, Bajer A. Ticks and the city - are there any differences between city parks and natural forests in terms of tick abundance and prevalence of spirochaetes?. Parasit Vectors. 2017;10:573 pubmed publisher
    ..5%)]. Surprisingly, a similar risk of infection with Borreliella spp. and/or B. miyamotoi was discovered in highly- and low-transformed areas. We suggest that the awareness of presence of these disease agents in cities should be raised. ..