Heli Simojoki

Publications

Research output per year 2003 2010 2011 2014 2017 2018 2019 2021 2022

• 47 Article
• 9 Conference contribution
• 4 Anthology or special issue
• 3 Conference article
• 8 More
  • 2 Book
  • 2 Abstract
  • 1 Commissioned report
  • 1 Poster
  • 1 Comment/debate
  • 1 Doctoral Thesis

Research output per year

Research output per year

Search results

• 2022

  Effect of Farm Management Practices on Morbidity and Antibiotic Usage on Calf Rearing Farms

  Sandelin, A., Hälli, O., Härtel, H., Herva, T., Kaartinen, L., Tuunainen, E., Rautala, H., Soveri, T. & Simojoki, H., Feb 2022, In: Antibiotics. 11, 2, 20 p., 270.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

• Prototheca spp. naudan utaretulehduksen aiheuttajana: kirjallisuuskatsaus ja tapausselostus kolmesta karjaongelmasta

  Simojoki, H., Rajala-Schultz, P., Hovinen, M. & Riipinen, L., 2 Sep 2022, In: Eläinlääkäri : Suomen eläinlääkärilehti. 128, 5, p. 271-276 6 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File
• 2021

  Dry cow therapy and early lactation udder health problems - Associations and risk factors

  Niemi, R., Hovinen, M., Vilar, M. J., Simojoki, H. & Rajala-Schultz, P., Mar 2021, In: Preventive Veterinary Medicine. 188, 10 p., 105268.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Effect of farm and animal-level factors on youngstock mortality and growth on calf rearing farms

  Sandelin, A., Hälli, O., Härtel, H., Herva, T., Seppä-Lassila, L., Tuunainen, E., Rautala, H., Soveri, T. & Simojoki, H., Aug 2021, In: Preventive Veterinary Medicine. 193, 11 p., 105416.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Genomic Analysis of Staphylococcus aureus Isolates Associated With Peracute Non-gangrenous or Gangrenous Mastitis and Comparison With Other Mastitis-Associated Staphylococcus aureus Isolates

  Åvall-Jääskeläinen, S., Koort, J., Simojoki, H. & Taponen, S., 8 Jul 2021, In: Frontiers in Microbiology. 12, 24 p., 688819.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Mycoplasma bovis infection in dairy herds-Risk factors and effect of control measures

  Haapala, V., Vähänikkilä, N., Kulkas, L., Tuunainen, E., Pohjanvirta, T., Autio, T., Pelkonen, S., Soveri, T. & Simojoki, H., Feb 2021, In: Journal of Dairy Science. 104, 2, p. 2254-2265 12 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Prevalence of digital dermatitis using mirror scoring in Finnish freestall dairy herds

  Pirkkalainen, H., Riihimäki, A., Simojoki, H., Soveri, T., Rajala-Schultz, P. J., Hintikka, T., Pelkonen, S., Kontturi, M. & Kujala-Wirth, M., Aug 2021, In: Journal of Dairy Science. 104, 8, p. 9173-9184 12 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File
• 2020

  Acute phase response and clinical manifestation in outbreaks of interdigital phlegmon in dairy herds

  Kontturi, M., Junni, R., Kujala-Wirth, M., Malinen, E., Seuna, E., Pelkonen, S., Soveri, T. & Simojoki, H., Feb 2020, In: Comparative Immunology, Microbiology and Infectious Diseases. 68, 7 p., 101375.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Antibiotic dry cow therapy, somatic cell count, and milk production: Retrospective analysis of the associations in dairy herd recording data using multilevel growth models

  Niemi, R., Vilar, M. J., Dohoo, I. R., Hovinen, M., Simojoki, H. & Rajala-Schultz, P. J., Jul 2020, In: Preventive Veterinary Medicine. 180, 9 p., 105028.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Field trial to evaluate the effect of an intranasal respiratory vaccine protocol on bovine respiratory disease incidence and growth in a commercial calf rearing unit

  Sandelin, A., Härtel, H., Seppä-Lassila, L., Kaartinen, L., Rautala, H., Soveri, T. & Simojoki, H., 4 Mar 2020, In: BMC Veterinary Research. 16, 1, 10 p., 73.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Vasikkakasvatuksen ongelmat ja muutosvaihtoehdot - Projektin loppuraportti

  Simojoki, H., 1 Dec 2020, Saarentaus: Helsingin yliopisto. 11 p.

  Research output: Book/Report › Commissioned report

  Open Access

  File
• 2019

  An atypical Bacillus anthracis infection in a bull-A potential occupational health hazard

  Friman, M., Kakko, L., Constantin, C., Simojoki, H., Andersson, M. A., Nagy, S., Salonen, H. & Andersson, M., Sep 2019, In: Reproduction in Domestic Animals. 54, 9, p. 1279-1283 5 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Bacterial species associated with interdigital phlegmon outbreaks in Finnish dairy herds

  Kontturi, M., Junni, R., Simojoki, H., Malinen, E., Seuna, E., Klitgaard, K., Kujala-Wirth, M., Soveri, T. & Pelkonen, S., 29 Jan 2019, In: BMC Veterinary Research. 15, 12 p., 44.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Bovine milk microbiome: a more complex issue than expected

  Taponen, S., McGuinness, D., Hiitiö, H., Simojoki, H., Zadoks, R. & Pyörälä, S., 6 Jun 2019, In: Veterinary Research. 50, 15 p., 44.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

• Characterisation of the course of Mycoplasma bovis infection in naturally infected dairy herds

  Vähänikkilä, N., Pohjanvirta, T., Haapala, V., Simojoki, H., Soveri, T., Browning, G. F., Pelkonen, S., Wawegama, N. K. & Autio, T., Apr 2019, In: Veterinary Microbiology. 231, p. 107-115 9 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Comparison of Finnish meat inspection records and average daily gain for cattle herds differing in Mycoplasma bovis test-status

  Haapala, V., Herva, T., Härtel, H., Pitkänen, E., Mattila, J., Rautjoki, P., Pelkonen, S., Soveri, T. & Simojoki, H., Jul 2019, In: Veterinary Journal. 249, p. 41-46 6 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Detection of Mycoplasma bovis carrier animals using tonsil samples – preliminary results

  Haapala, V. M., Pohjanvirta, T., Syrjälä, P., Soveri, T. T., Simojoki, H. K. & Linden, J., 2019, p. 70. 1 p.

  Research output: Conference materials › Abstract

• Näkökulma: Ajatuksia kliinisestä tutkimuksesta ja sen tarpeellisuudesta

  Hovinen, M., Mykkänen, A., Pääkkönen, T., Rajamäki, M. & Simojoki, H., 2019, In: Suomen eläinlääkärilehti. 125, 3, p. 156 1 p.

  Research output: Contribution to journal › Comment/debate › Professional

• Serratia marcescens -utaretulehduksen leviäminen vedinkaston välityksellä - kirjallisuuskatsaus ja tapausselostus

  Sulonen, A., Lasonen, R. & Simojoki, H., 2019, In: Suomen eläinlääkärilehti. 125, 4, p. 187-190 4 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File
• 2018

  Elimination of experimentally induced bovine intramammary infection assessed by multiplex real-time PCR and bacterial culture

  Hiitiö, H., Pyörälä, S., Taponen, S., Rajala-Schultz, P. & Simojoki, H., Jun 2018, In: Journal of Dairy Science. 101, 6, p. 5267-5276 10 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

• Hyöty irti vapaan kaupan valmisteista - tutkitusti: Osa 1: Aineenvaihduntasairauksien hoitoon käytettävät valmisteet, Osa 2: Ruuansulatuskanavan häiriö- ja puutetiloihin käytettävät vapaan kaupan valmisteet

  Hovinen, M. H., Simojoki, H. K. & Rautala, H. V. I., Dec 2018, In: Maito ja me. 4/2018

  Research output: Contribution to journal › Article › Professional

  Open Access

• Semen as a source of Mycoplasma bovis mastitis in dairy herds

  Haapala, V., Pohjanvirta, T., Vähänikkilä, N., Halkilahti, J., Simonen, H., Pelkonen, S., Soveri, T., Simojoki, H. & Autio, T., Mar 2018, In: Veterinary Microbiology. 216, p. 60-66 7 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Short communication: Drying-off practices and use of dry cow therapy in Finnish dairy herds

  Vilar, M. J., Hovinen, M., Simojoki, H. & Rajala-Schultz, P. J., Aug 2018, In: Journal of Dairy Science. 101, 8, p. 7487-7493 7 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Utilization of meat inspection data in detecting Mycoplasma bovis - positive dairy farms

  Haapala, V. M., Herva, T., Härtel, H., Pitkänen, E., Mattila, J., Rautjoki, P., Soveri, T. T. & Simojoki, H. K., 2018, p. 251. 1 p.

  Research output: Conference materials › Abstract

• 2017

  A comparison of unheated loose housing with stables on the respiratory health of weaned-foals in cold winter conditions: an observational field-study

  Junkkari, R., Simojoki, H., Heiskanen, M-L., Pelkonen, S., Sankari, S., Tulamo, R-M. & Mykkanen, A., 26 Oct 2017, In: Acta Veterinaria Scandinavica. 59, 10 p., 73.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Health and growth of Finnish beef calves and the relation to acute phase response

  Seppä-Lassila, L., Eerola, U., Orro, T., Härtel, H., Simojoki, H., Autio, T., Pelkonen, S. & Soveri, T., Jan 2017, In: Livestock Science. 196, p. 7-13 7 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Prevalence of subclinical mastitis in Finnish dairy cows: changes during recent decades and impact of cow and herd factors

  Hiitiö, H., Vakkamäki, J., Simojoki, H., Autio, T., Junnila, J., Pelkonen, S. & Pyörälä, S., 20 Apr 2017, In: Acta Veterinaria Scandinavica. 59, 14 p., 22.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Seleenin ja E-vitamiinin saanti suomalaisissa emolehmäkarjoissa

  Värränkivi, S., Simojoki, H., Härtel, H. & Sankari, S., 2017, In: Suomen eläinlääkärilehti. 123, 4, p. 211-217 7 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Survey of interdigital phlegmon outbreaks and their risk factors in free stall dairy herds in Finland

  Kontturi, M., Kujala, M., Junni, R., Malinen, E., Seuna, E., Pelkonen, S., Soveri, T. & Simojoki, H., 12 Jul 2017, In: Acta Veterinaria Scandinavica. 59, 9 p., 46.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• The effect of a cannula milk sampling technique on the microbiological diagnosis of bovine mastitis

  Friman, M., Hiitiö, H., Niemi, M., Holopainen, J., Pyörälä, S. & Simojoki, H., Aug 2017, In: Veterinary Journal. 226, p. 57-61 5 p.

  Research output: Contribution to journal › Article › Scientific › peer-review
• 2016

  Mikrobilääkkeiden käyttösuositukset eläinten tärkeimpiin tulehdus- ja tartuntatauteihin

  Elfing, S., Hakkarainen, K., Heinonen, M. L., Karikoski, N. P., Kilpinen, T. S., Koskinen, H. S., Lasonen, R. M., Laurila, H. P., Moisander, A-M., Mustonen, E. A. I., Mykkänen, A. K., Mölsä, S. H., Niinistö, K. E., Nordgren, H. S., Oliviero, C., Peltoniemi, O. A. T., Pietilä, E. M., Pohjola, L. K., Pyörälä, S. H. K., Rantala, M. H. J., & 20 othersRautala, H. V. I., Saijonmaa-Koulumies, L. E., Seppänen, R. T. K., Sillanpää, H. H., Simojoki, H. K., Spillmann, T., Viitanen, S. J., Vapaavuori, O. M. I., Thomson, H. K., Westermarck, E., Kauko, L., Kuntsi-Vaattovaara, H., Laaksonen, I., Moisander-Jylhä, A-M., Penttilä, M., Rantanen, V., Räihä, M., Schildt, K., Sillanpää, H. & Viitanen, M., 2016, Helsinki: Finnish Food Safety Authority Evira. 48 p.

  Research output: Book/Report › Book › Professional

  Open Access

• N-acetyl -beta-D-glucosaminidase activity in cow milk as an indicator of mastitis

  Hovinen, M., Simojoki, H., Pösö, R., Suolaniemi, J., Kalmus, P., Suojala, L. & Pyörälä, S., May 2016, In: Journal of Dairy Research. 83, 2, p. 219-227 9 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Occurrence of Fusobacterium necrophorum in interdigital phlegmon, other claw infections and healthy claws of dairy cattle.

  Kontturi, M. R., Junni, R. E., Malinen, E. S., Seuna, E., Kujala, M. J., Simojoki, H. K., Pelkonen, S. & Soveri, T. T., 2016.

  Research output: Conference materials › Poster

  Open Access

• The effect of sampling technique on the PCR-based bacteriological results of bovine milk samples

  Hiitiö, H. K., Simojoki, H. K., Kalmus, P., Holopainen, J., Pyörälä, S. H. K. & Taponen, S. S., Aug 2016, In: Journal of Dairy Science. 99, 8, p. 6532-6541 10 p.

  Research output: Contribution to journal › Article › Scientific › peer-review
• 2015

  Survey of infectious hoof diseases in Finland

  Kujala, M. J., Kontturi, M. R., Junni, R. E., Simojoki, H. K., Malinen, E. S., Seuna, E., Pelkonen, S. & Soveri, T. T., 22 Nov 2015, Proceedings of the 18th International Symposium & 10th Conference on Lameness in Ruminants.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific

  Open Access

• The costs of interdigital phlegmon in four loose-housed Finnish dairy herds

  Häggman, J., Junni, R., Simojoki, H., Juga, J. & Soveri, T., 2015, In: Acta Veterinaria Scandinavica. 57, 4 p., 90.

  Research output: Contribution to journal › Article › Scientific › peer-review
• 2014

  Comparative proteome profiling of bovine and human Staphylococcus epidermidis strains for screening specifically expressed virulence and adaptation proteins

  Siljamäki, P., Varmanen, P., Kankainen, M., Pyörälä, S., Karonen, T., Iivanainen, A., Auvinen, P., Paulin, L., Laine, P. K., Taponen, S., Simojoki, H., Sukura, A., Nyman, T. A. & Savijoki, K., 2014, In: Proteomics (Weinheim). 14, 16, p. 1890-1894 5 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Efficacy of 5-day parenteral versus intramammary benzylpenicillin for treatment of clinical mastitis caused by gram-positive bacteria susceptible to penicillin in vitro

  Kalmus, P., Simojoki, H., Orro, T., Taponen, S., Mustonen, K., Holopainen, J. & Pyörälä, S., Apr 2014, In: Journal of Dairy Science. 97, 4, p. 2155-2164 10 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Genomics and Proteomics Provide New Insight into the Commensal and Pathogenic Lifestyles of Bovine- and Human-Associated Staphylococcus epidermidis Strains

  Savijoki, K., Iivanainen, A., Siljamaki, P., Laine, P. K., Paulin, L., Karonen (os. Miettinen), T., Pyörälä, S., Kankainen, M., Nyman, T. A., Salomaki, T., Koskinen, P., Holm, L., Simojoki, H., Taponen, S., Sukura, A., Kalkkinen, N., Auvinen, P. & Varmanen, P., Aug 2014, In: Journal of Proteome Research. 13, 8, p. 3748-3762 15 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Increase in Acute-Phase Proteins in Early Life Predicts Reduced Growth Rate of Beef Calves at 6 Months of Age

  Seppa-Lassila, L., Hartel, H., Eerola, U., Orro, T., Simojoki, H. & Soveri, T., Jun 2014, In: Scandinavian Journal of Immunology. 79, 6, p. 429-429 1 p.

  Research output: Contribution to journal › Conference article › Scientific

• Short communication: Lameness impairs feeding behavior of dairy cows

  Norring, M., Haggman, J., Simojoki, H., Tamminen, P., Winckler, C. & Pastell, M., 2014, In: Journal of Dairy Science. 97, 7, p. 4317-4321 5 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File
• 2013

  Bovine-associated CNS species resist phagocytosis differently

  Åvall-Jääskeläinen, S., Koort, J., Simojoki, H. & Taponen, S., 2013, In: BMC Veterinary Research. 9, 11, 7 p., 227.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Milk haptoglobin, milk amyloid A, and N-acetyl-beta-D-glucosaminidase activity in bovines with naturally occurring clinical mastitis diagnosed with a quantitative PCR test

  Kalmus, P., Simojoki, H., Pyörälä, S., Taponen, S., Holopainen, J. & Orro, T., 2013, In: Journal of Dairy Science. 96, 6, p. 3662-3670

  Research output: Contribution to journal › Article › Scientific › peer-review

• Outbreaks of interdigital phlegmon in Finland

  Junni, R. E., Kontturi, M. R., Seuna, E., Kujala, M. J., Simojoki, H. K., Malinen, E. S., Pekkanen, K., Pelkonen, S. & Soveri, T. T., 11 Aug 2013, Unknown host publication.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific

• 2012

  Is the biofilm formation and slime producing ability of coagulase-negative staphylococci associated with the persistence and severity of intramammary infection?

  Simojoki, H., Hyvönen, P., Plumed Ferrer, C., Taponen, S. & Pyörälä, S., 2012, In: Veterinary Microbiology. 158, 3-4, p. 344-352 9 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Measuring the Effect of Lameness on Feed Intake and Activity in Dairy Cows

  Häggman, J., Simojoki, H. K., Norring, M., Tamminen, P. & Pastell, M., 2012, International Conference of Agricultural Engineering - CIGR-AgEng2012: Papers Book. Valencia: European Society of Agricultural Engineers, 4 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific
• 2011

  Acute phase proteins in milk in naturally acquired bovine mastitis caused by different pathogens

  Pyörälä, S., Hovinen, M., Simojoki, H., Fitzpatrick, J., Eckersall, P. D. & Orro, T., 2011, In: Veterinary Record. 168, 20, p. art. 535 6 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Bovine mastitis caused by coagulase-negative staphylococci : host response and bacterial factors

  Simojoki, H., 2011, Helsinki: University of Helsinki. 81 p.

  Research output: Thesis › Doctoral Thesis › Collection of Articles

• Efficacy of 5-d intramammary vs. systemic penicillin G treatment of clinical mastitis caused by Gram-positive bacteria. Evaluation of bacteriological cure using a PCR-test.

  Simojoki, H. K., Taponen, S. S., Orro, T., Kalmus, P., Pyörälä, S., Mustonen, K. M. & Holopainen, J., 2011, St. Louis, Missouri: National Mastitis Council. 5 p.

  Research output: Book/Report › Anthology or special issue › Scientific › peer-review

• Experimental bovine mastitis induced with 2 different strains of Staphylococcus epidermidis; non-invasive human-originated ATCC12228 and an isolate from persistent bovine mastitis

  Simojoki, H., Salomäki, T., Taponen, S., Iivanainen, A. & Pyörälä, S., 21 Sep 2011, St. Louis, Missouri.

  Research output: Book/Report › Anthology or special issue › Scientific › peer-review