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Anaerococcus
Genus of bacteria

Anaerococcus is a genus of bacteria. Its type species is Anaerococcus prevotii. These bacteria are Gram-positive and strictly anaerobic. The genus Anaerococcus was proposed in 2001. Its genome was sequenced in August 2009. The genus Anaerococcus is one of six genera classified within the group GPAC (Gram-Positive Anaerobic Cocci). These six genera (Peptostreptococcus, Peptoniphilus, Parvimonas, Finegoldia, Murdochiella, and Anaerococcus) are found in the human body as part of the commensal human microbiota.

It is commonly found in the human microbiome and is associated with various infections. Most of the species in this genus can be found among microbes of the skin, human vagina, nasal cavity, oral cavity and feces, often as a pathogen found in ovarian abscesses, chronic wounds and vaginal discharge. Moreover, some of the species can be isolated from foot ulcers and knee arthritis. It can be present in urinary tract infections, chronic ulcers, pleural empyema, blood infections, and soft tissue infections. It is involved in polymicrobial infections. Strains of Anaerococcus were found in the armpit microbiota suggesting some species in this genus could play a role in axillary odor.

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Physiology

The genus Anaerococcus are non motile bacteria who can not form spores.171819 Depending on the species the arrangement can be different. The most common arrangements within this genus are pairs, tetrads, short chains and irregular formations.2021 Their cells size can differ from 0.6μm to 0.9μm.22 However, when they are grown using enrinched blood agar their size can go from 0.5μm to 2μm.23 In this genus, there are more than one major cellular fatty acids: C18:1, C16:1, C18 and C16.24 Most species in this genus are indole-negative and coaguase-negative.25 In general, the species of Anaerococcus presents susceptibility to penicillins but are resistant to tetracycline, erythromycin and clindamycin.26

Metabolism

The genus Anaerococcus are classified as saccharolytic bacteria.2728 Its species can be arranged from weakly saccharolytic (ex. A. prevotii, A. lactolyticus) to strongly saccharolytic (ex. A. hydrogenalis).29 This genus can ferment carbohydrates weakly.30 The major sources of energy use in the metabolism of Anaerococcus are peptones and aminoacids.3132 The three major sugars fermented within this genus are glucose, mannose, fructose and sucrose.3334 After fermenting the sugars, Anaerococcus produce weak acids as their metabolic end product.35 Within these metabolic end products, this genus ca produce butyric acid, lactic acid, and some propionic and succinic acid.36 Nonetheless, the major metabolite produced by Anaerococcus is butyrate.373839

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)40 and National Center for Biotechnology Information (NCBI)41

16S rRNA based LTP_10_2024424344120 marker proteins based GTDB 09-RS220454647
Anaerococcus

A. porci

A. vaginalis

A. rubeinfantis

A. jeddahensis

A. hydrogenalis

A. senegalensis

A. pacaensis

A. nagyae

A. octavius

A. prevotii

A. tetradius

A. lactolyticus

A. degeneri

A. murdochii

Anaerococcus

A. porci Wylensek et al. 2021

A. hydrogenalis (Ezaki et al. 1990) Ezaki et al. 2001

A. senegalensis Lagier et al. 2014

A. vaginalis (Li et al. 1992) Ezaki et al. 2001

A. jeddahensis Dione et al. 2023

"A. ihuae" Ly et al. 2022

A. rubeinfantis corrig. Tidjani Alou et al. 2017

A. provencensis corrig. Pagnier et al. 2017

"A. urinimassiliensis" corrig. Morand et al. 2016

A. pacaensis Pagnier et al. 2017

A. nagyae Veloo et al. 2017

A. octavius (Murdoch et al. 1997) Ezaki et al. 2001

"A. vaginimassiliensis" Bordigoni et al. 2020

A. tetradius (Ezaki et al. 1983) Ezaki et al. 2001

"A. marasmi" Tall et al. 2020

A. prevotii (Foubert and Douglas 1948) Ezaki et al. 2001

"A. mediterraneensis" Diop et al. 2017

A. lactolyticus (Li et al. 1992) Ezaki et al. 2001

A. degeneri Veloo et al. 2017

A. murdochii Song et al. 2010

Incertae sedis:

  • "A. faecalis" Yu et al. 2021
  • "Ca. A. massiliensis" Fenollar et al. 2006
  • "Ca. A. phoceensis" Fenollar et al. 2006
  • "Ca. A. timonensis" Fenollar et al. 2006

Species

Until recently, the genus Anaerococcus have 14 known species.4849 Six of the species were initially classified in the genus Peptostreptococcus but then based on their characteristics were re-classified in the new genus Anaerococcus: A. hydrogenalis, A. lactolyticus, A. octavius, A. prevotii, A. tetradius, and A. vaginalis.5051 Throughout the years, the specie who has been more commonly found on the body within this genus is A. prevotii.52

Anaerococcus octavius

Contrary to most of the species in the genus, Anaerococcus octavius was not related to human infections.53 Nevertheless, recently a new case revealed A. octavius can cause bacteremia.54 Even though it is uncommon, Anaerococcus octavius can be the cause for human infections.55 Other studies have found A. octavius as part of the nasal, skin and vaginal normal flora.5657 This bacteria can ferment ribose, glucose, and mannose.58

Anaerococcus prevotii

A. prevotii is normally found in vaginal discharge, human plasma and some types of abscesses - such as ovarian, peritoneal sacral and/or lung abscesses.5960 Anaerococcus prevotii is part of the normal flora in the skin, oral cavity and the gut.61 Studies has shown Anaerococcus prevotii presents resistance to Ceftazidime, Clindamycin, Levofloxacin.62 Unlike the other species, A. prevotii can not ferment glucose.63

Anaerococcus vaginalis

A. vaginalis was first recovered from vaginal discharges and ovarian abscesses although this bacteria can also be found in pressure ulcers and diabetic foot.6465 Some strains from this species can be indole-positive.66

Anaerococcus provencensis

A. provencensis was isolated from a cervical abscess.67 This species can ferment lactose, unlike A. tetradius, A. prevotii, and A. octavius.68 The first analysis made on Anaerococcus provencensis showed it is susceptible to penicillin G, imipenem, amoxillin, metronidazole, cefotetan and vancomycin.69

Anaerococcus senegalensis

A. senegalensis is one of the few species in the genus whose genome has been sequenced.70 The genome has a size of 1,790,835 bp.71 Analysis did not show presence of a plasmid.72 Initially, Anaerococcus senegalensis was found in the fecal flora of a healthy person.73

Anaerococcus rubiinfantis

A. rubiinfantis was discovered from a stool sample taken from an infant with severe acute malnutrition in Senegal.74 Based on a genomic analysis, Anaerococcus rubiinfantis has high antibiotic susceptibility.75 For that reason this bacteria can be treated with common oral antibiotics.76 A. rubiinfantis have catalase activity, which is not common from an anaerobic bacteria.77

Anaerococcus marasmi

A. marasmi was first found in 2016 from a stool sample on a child with marasmus.78 Just like A. rubiinfantis, Anaerococcus marasmi is catalase positive.79 A. marasmi can grow in a range of pH between 6.5 and 8.80 Moreover, A. marasmi has a high 16S rRNA sequence similarity (97.6%) with A. prevotii 81

Anaerococcus urinomassiliensis

A. urinomassiliensis was isolated from a urine sample of a male adolescent with membranoproliferative glomerulonephritis and autoimmune hepatitis.82 It took 10 days of anaerobic incubation to observe growth from this bacteria.83 Anaerococcus urinomassiliensis does not have either oxidase or catalase activity.84

See also

References

  1. A.C. Parte; et al. "Anaerococcus". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved 2023-09-09. https://lpsn.dsmz.de/genus/anaerococcus ↩

  2. Lagier JC, El Karkouri K, Nguyen TT, Armougom F, Raoult D, Fournier PE (March 2012). "Non-contiguous finished genome sequence and description of Anaerococcus senegalensis sp. nov". Standards in Genomic Sciences. 6 (1): 116–25. Bibcode:2012SGenS...6..116L. doi:10.4056/sigs.2415480. PMC 3359877. PMID 22675604. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3359877 ↩

  3. Song Y, Finegold SM (2011-01-01). "Peptostreptococcus, Finegoldia, Anaerococcus, Peptoniphilus, Veillonella , and Other Anaerobic Cocci". In Versalovic J, Carroll KC, Funke G, Jorgensen JH, Landry ML, Warnock DW (eds.). Manual of Clinical Microbiology (10th ed.). American Society of Microbiology. pp. 803–816. doi:10.1128/9781555816728.ch48. ISBN 978-1-55581-463-2. Retrieved 2020-08-02. 978-1-55581-463-2 ↩

  4. Ezaki T, Kawamura Y, Li N, Li ZY, Zhao L, Shu S (July 2001). "Proposal of the genera Anaerococcus gen. nov., Peptoniphilus gen. nov. and Gallicola gen. nov. for members of the genus Peptostreptococcus". International Journal of Systematic and Evolutionary Microbiology. 51 (Pt 4): 1521–1528. doi:10.1099/00207713-51-4-1521. PMID 11491354. https://doi.org/10.1099%2F00207713-51-4-1521 ↩

  5. Lagier JC, El Karkouri K, Nguyen TT, Armougom F, Raoult D, Fournier PE (March 2012). "Non-contiguous finished genome sequence and description of Anaerococcus senegalensis sp. nov". Standards in Genomic Sciences. 6 (1): 116–25. Bibcode:2012SGenS...6..116L. doi:10.4056/sigs.2415480. PMC 3359877. PMID 22675604. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3359877 ↩

  6. Ezaki T, Kawamura Y, Li N, Li ZY, Zhao L, Shu S (July 2001). "Proposal of the genera Anaerococcus gen. nov., Peptoniphilus gen. nov. and Gallicola gen. nov. for members of the genus Peptostreptococcus". International Journal of Systematic and Evolutionary Microbiology. 51 (Pt 4): 1521–1528. doi:10.1099/00207713-51-4-1521. PMID 11491354. https://doi.org/10.1099%2F00207713-51-4-1521 ↩

  7. Veloo AC, de Vries ED, Jean-Pierre H, van Winkelhoff AJ (April 2016). "Anaerococcus nagyae sp. nov., isolated from human clinical specimens". Anaerobe. 38: 111–115. doi:10.1016/j.anaerobe.2015.11.009. PMID 26639871. http://www.sciencedirect.com/science/article/pii/S1075996415300858 ↩

  8. Labutti K, Pukall R, Steenblock K, Glavina Del Rio T, Tice H, Copeland A, et al. (September 2009). "Complete genome sequence of Anaerococcus prevotii type strain (PC1)". Standards in Genomic Sciences. 1 (2): 159–65. doi:10.4056/sigs.24194. PMC 3035230. PMID 21304652. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3035230 ↩

  9. Veloo AC, Elgersma PE, van Winkelhoff AJ (June 2015). "Anaerococcus degenerii sp. nov., isolated from human clinical specimens". Anaerobe. 33: 71–5. doi:10.1016/j.anaerobe.2015.02.002. PMID 25680238. /wiki/Doi_(identifier) ↩

  10. Veloo AC, de Vries ED, Jean-Pierre H, van Winkelhoff AJ (April 2016). "Anaerococcus nagyae sp. nov., isolated from human clinical specimens". Anaerobe. 38: 111–115. doi:10.1016/j.anaerobe.2015.11.009. PMID 26639871. http://www.sciencedirect.com/science/article/pii/S1075996415300858 ↩

  11. "BacMap". Retrieved 27 March 2017. http://bacmap.wishartlab.com/organisms/950 ↩

  12. Cobo F, Navarro-Marí JM (February 2020). "First description of Anaerococcus octavius as cause of bacteremia". Anaerobe. 61: 102130. doi:10.1016/j.anaerobe.2019.102130. PMID 31765706. S2CID 208298004. /wiki/Doi_(identifier) ↩

  13. Lagier JC, El Karkouri K, Nguyen TT, Armougom F, Raoult D, Fournier PE (March 2012). "Non-contiguous finished genome sequence and description of Anaerococcus senegalensis sp. nov". Standards in Genomic Sciences. 6 (1): 116–25. Bibcode:2012SGenS...6..116L. doi:10.4056/sigs.2415480. PMC 3359877. PMID 22675604. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3359877 ↩

  14. Murphy EC, Frick IM (July 2013). "Gram-positive anaerobic cocci--commensals and opportunistic pathogens". FEMS Microbiology Reviews. 37 (4): 520–53. doi:10.1111/1574-6976.12005. PMID 23030831. https://doi.org/10.1111%2F1574-6976.12005 ↩

  15. Murphy EC, Frick IM (July 2013). "Gram-positive anaerobic cocci--commensals and opportunistic pathogens". FEMS Microbiology Reviews. 37 (4): 520–53. doi:10.1111/1574-6976.12005. PMID 23030831. https://doi.org/10.1111%2F1574-6976.12005 ↩

  16. Fujii, Takayoshi; Shinozaki, Junko; Kajiura, Takayuki; Iwasaki, Keiji; Fudou, Ryosuke (July 2014). "A newly discovered Anaerococcus strain responsible for axillary odor and a new axillary odor inhibitor, pentagalloyl glucose". FEMS Microbiology Ecology. 89 (1): 198–207. Bibcode:2014FEMME..89..198F. doi:10.1111/1574-6941.12347. PMID 24784923. https://doi.org/10.1111%2F1574-6941.12347 ↩

  17. Ezaki T, Kawamura Y, Li N, Li ZY, Zhao L, Shu S (July 2001). "Proposal of the genera Anaerococcus gen. nov., Peptoniphilus gen. nov. and Gallicola gen. nov. for members of the genus Peptostreptococcus". International Journal of Systematic and Evolutionary Microbiology. 51 (Pt 4): 1521–1528. doi:10.1099/00207713-51-4-1521. PMID 11491354. https://doi.org/10.1099%2F00207713-51-4-1521 ↩

  18. Ezaki, Takayuki; Ohkusu, Kiyofumi (2015), "Anaerococcus", Bergey's Manual of Systematics of Archaea and Bacteria, American Cancer Society, pp. 1–5, doi:10.1002/9781118960608.gbm00712, ISBN 978-1-118-96060-8 978-1-118-96060-8 ↩

  19. Lagier JC, El Karkouri K, Nguyen TT, Armougom F, Raoult D, Fournier PE (March 2012). "Non-contiguous finished genome sequence and description of Anaerococcus senegalensis sp. nov". Standards in Genomic Sciences. 6 (1): 116–25. Bibcode:2012SGenS...6..116L. doi:10.4056/sigs.2415480. PMC 3359877. PMID 22675604. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3359877 ↩

  20. Murphy EC, Frick IM (July 2013). "Gram-positive anaerobic cocci--commensals and opportunistic pathogens". FEMS Microbiology Reviews. 37 (4): 520–53. doi:10.1111/1574-6976.12005. PMID 23030831. https://doi.org/10.1111%2F1574-6976.12005 ↩

  21. Ezaki T, Kawamura Y, Li N, Li ZY, Zhao L, Shu S (July 2001). "Proposal of the genera Anaerococcus gen. nov., Peptoniphilus gen. nov. and Gallicola gen. nov. for members of the genus Peptostreptococcus". International Journal of Systematic and Evolutionary Microbiology. 51 (Pt 4): 1521–1528. doi:10.1099/00207713-51-4-1521. PMID 11491354. https://doi.org/10.1099%2F00207713-51-4-1521 ↩

  22. Murphy EC, Frick IM (July 2013). "Gram-positive anaerobic cocci--commensals and opportunistic pathogens". FEMS Microbiology Reviews. 37 (4): 520–53. doi:10.1111/1574-6976.12005. PMID 23030831. https://doi.org/10.1111%2F1574-6976.12005 ↩

  23. Murphy EC, Frick IM (July 2013). "Gram-positive anaerobic cocci--commensals and opportunistic pathogens". FEMS Microbiology Reviews. 37 (4): 520–53. doi:10.1111/1574-6976.12005. PMID 23030831. https://doi.org/10.1111%2F1574-6976.12005 ↩

  24. Ezaki, Takayuki; Ohkusu, Kiyofumi (2015), "Anaerococcus", Bergey's Manual of Systematics of Archaea and Bacteria, American Cancer Society, pp. 1–5, doi:10.1002/9781118960608.gbm00712, ISBN 978-1-118-96060-8 978-1-118-96060-8 ↩

  25. Murphy EC, Frick IM (July 2013). "Gram-positive anaerobic cocci--commensals and opportunistic pathogens". FEMS Microbiology Reviews. 37 (4): 520–53. doi:10.1111/1574-6976.12005. PMID 23030831. https://doi.org/10.1111%2F1574-6976.12005 ↩

  26. Cobo F, Navarro-Marí JM (February 2020). "First description of Anaerococcus octavius as cause of bacteremia". Anaerobe. 61: 102130. doi:10.1016/j.anaerobe.2019.102130. PMID 31765706. S2CID 208298004. /wiki/Doi_(identifier) ↩

  27. Lagier JC, El Karkouri K, Nguyen TT, Armougom F, Raoult D, Fournier PE (March 2012). "Non-contiguous finished genome sequence and description of Anaerococcus senegalensis sp. nov". Standards in Genomic Sciences. 6 (1): 116–25. Bibcode:2012SGenS...6..116L. doi:10.4056/sigs.2415480. PMC 3359877. PMID 22675604. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3359877 ↩

  28. Ezaki, Takayuki; Li, Na; Kawamura, Yoshiaki (2006), Dworkin, Martin; Falkow, Stanley; Rosenberg, Eugene; Schleifer, Karl-Heinz (eds.), "The Anaerobic Gram-Positive Cocci", The Prokaryotes: Volume 4: Bacteria: Firmicutes, Cyanobacteria, New York, NY: Springer US, pp. 795–808, doi:10.1007/0-387-30744-3_26, ISBN 978-0-387-30744-2 978-0-387-30744-2 ↩

  29. Ezaki, Takayuki; Li, Na; Kawamura, Yoshiaki (2006), Dworkin, Martin; Falkow, Stanley; Rosenberg, Eugene; Schleifer, Karl-Heinz (eds.), "The Anaerobic Gram-Positive Cocci", The Prokaryotes: Volume 4: Bacteria: Firmicutes, Cyanobacteria, New York, NY: Springer US, pp. 795–808, doi:10.1007/0-387-30744-3_26, ISBN 978-0-387-30744-2 978-0-387-30744-2 ↩

  30. Labutti K, Pukall R, Steenblock K, Glavina Del Rio T, Tice H, Copeland A, et al. (September 2009). "Complete genome sequence of Anaerococcus prevotii type strain (PC1)". Standards in Genomic Sciences. 1 (2): 159–65. doi:10.4056/sigs.24194. PMC 3035230. PMID 21304652. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3035230 ↩

  31. Ezaki T, Kawamura Y, Li N, Li ZY, Zhao L, Shu S (July 2001). "Proposal of the genera Anaerococcus gen. nov., Peptoniphilus gen. nov. and Gallicola gen. nov. for members of the genus Peptostreptococcus". International Journal of Systematic and Evolutionary Microbiology. 51 (Pt 4): 1521–1528. doi:10.1099/00207713-51-4-1521. PMID 11491354. https://doi.org/10.1099%2F00207713-51-4-1521 ↩

  32. Murphy EC, Frick IM (July 2013). "Gram-positive anaerobic cocci--commensals and opportunistic pathogens". FEMS Microbiology Reviews. 37 (4): 520–53. doi:10.1111/1574-6976.12005. PMID 23030831. https://doi.org/10.1111%2F1574-6976.12005 ↩

  33. Ezaki, Takayuki; Ohkusu, Kiyofumi (2015), "Anaerococcus", Bergey's Manual of Systematics of Archaea and Bacteria, American Cancer Society, pp. 1–5, doi:10.1002/9781118960608.gbm00712, ISBN 978-1-118-96060-8 978-1-118-96060-8 ↩

  34. Ezaki T, Kawamura Y, Li N, Li ZY, Zhao L, Shu S (July 2001). "Proposal of the genera Anaerococcus gen. nov., Peptoniphilus gen. nov. and Gallicola gen. nov. for members of the genus Peptostreptococcus". International Journal of Systematic and Evolutionary Microbiology. 51 (Pt 4): 1521–1528. doi:10.1099/00207713-51-4-1521. PMID 11491354. https://doi.org/10.1099%2F00207713-51-4-1521 ↩

  35. Ezaki, Takayuki; Li, Na; Kawamura, Yoshiaki (2006), Dworkin, Martin; Falkow, Stanley; Rosenberg, Eugene; Schleifer, Karl-Heinz (eds.), "The Anaerobic Gram-Positive Cocci", The Prokaryotes: Volume 4: Bacteria: Firmicutes, Cyanobacteria, New York, NY: Springer US, pp. 795–808, doi:10.1007/0-387-30744-3_26, ISBN 978-0-387-30744-2 978-0-387-30744-2 ↩

  36. Ezaki, Takayuki; Ohkusu, Kiyofumi (2015), "Anaerococcus", Bergey's Manual of Systematics of Archaea and Bacteria, American Cancer Society, pp. 1–5, doi:10.1002/9781118960608.gbm00712, ISBN 978-1-118-96060-8 978-1-118-96060-8 ↩

  37. Ezaki, Takayuki; Li, Na; Kawamura, Yoshiaki (2006), Dworkin, Martin; Falkow, Stanley; Rosenberg, Eugene; Schleifer, Karl-Heinz (eds.), "The Anaerobic Gram-Positive Cocci", The Prokaryotes: Volume 4: Bacteria: Firmicutes, Cyanobacteria, New York, NY: Springer US, pp. 795–808, doi:10.1007/0-387-30744-3_26, ISBN 978-0-387-30744-2 978-0-387-30744-2 ↩

  38. Murphy EC, Frick IM (July 2013). "Gram-positive anaerobic cocci--commensals and opportunistic pathogens". FEMS Microbiology Reviews. 37 (4): 520–53. doi:10.1111/1574-6976.12005. PMID 23030831. https://doi.org/10.1111%2F1574-6976.12005 ↩

  39. Lagier JC, El Karkouri K, Nguyen TT, Armougom F, Raoult D, Fournier PE (March 2012). "Non-contiguous finished genome sequence and description of Anaerococcus senegalensis sp. nov". Standards in Genomic Sciences. 6 (1): 116–25. Bibcode:2012SGenS...6..116L. doi:10.4056/sigs.2415480. PMC 3359877. PMID 22675604. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3359877 ↩

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  49. Cobo F, Navarro-Marí JM (February 2020). "First description of Anaerococcus octavius as cause of bacteremia". Anaerobe. 61: 102130. doi:10.1016/j.anaerobe.2019.102130. PMID 31765706. S2CID 208298004. /wiki/Doi_(identifier) ↩

  50. Veloo AC, de Vries ED, Jean-Pierre H, van Winkelhoff AJ (April 2016). "Anaerococcus nagyae sp. nov., isolated from human clinical specimens". Anaerobe. 38: 111–115. doi:10.1016/j.anaerobe.2015.11.009. PMID 26639871. http://www.sciencedirect.com/science/article/pii/S1075996415300858 ↩

  51. Lagier JC, El Karkouri K, Nguyen TT, Armougom F, Raoult D, Fournier PE (March 2012). "Non-contiguous finished genome sequence and description of Anaerococcus senegalensis sp. nov". Standards in Genomic Sciences. 6 (1): 116–25. Bibcode:2012SGenS...6..116L. doi:10.4056/sigs.2415480. PMC 3359877. PMID 22675604. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3359877 ↩

  52. Cobo F, Navarro-Marí JM (February 2020). "First description of Anaerococcus octavius as cause of bacteremia". Anaerobe. 61: 102130. doi:10.1016/j.anaerobe.2019.102130. PMID 31765706. S2CID 208298004. /wiki/Doi_(identifier) ↩

  53. Cobo F, Navarro-Marí JM (February 2020). "First description of Anaerococcus octavius as cause of bacteremia". Anaerobe. 61: 102130. doi:10.1016/j.anaerobe.2019.102130. PMID 31765706. S2CID 208298004. /wiki/Doi_(identifier) ↩

  54. Cobo F, Navarro-Marí JM (February 2020). "First description of Anaerococcus octavius as cause of bacteremia". Anaerobe. 61: 102130. doi:10.1016/j.anaerobe.2019.102130. PMID 31765706. S2CID 208298004. /wiki/Doi_(identifier) ↩

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