Dr. Chika Ejikeugwu
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Dr. Chika Ejikeugwu

Senior Lecturer & Researcher
Enugu State University of Science & Technology (ESUT), Agbani, Nigeria


Highest Degree
Ph.D. in Pharmaceutical Microbiology and Biotechnology from Nnamdi Azikiwe University, Nigeria

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Biography

Dr. Chika Ejikeugwu is the founder of the online Microbiology website, www.MicrobiologyClass.net

Area of Interest:

Microbiology
100%
Antimicrobial Resistance
62%
Antibiotic Resistance
90%
Bacteriology
75%
Pharmaceutical Microbiology
55%

Research Publications in Numbers

Books
2
Chapters
2
Articles
102
Abstracts
3

Selected Publications

  1. Ejikeugwu, C., O. Nworie, M. Saki, H.O.M. Al-Dahmoshi and N.S.K. Al-Khafaji et al., 2021. Metallo-β-lactamase and AmpC genes in Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa isolates from abattoir and poultry origin in Nigeria. BMC Microbiol., Vol. 21. 10.1186/s12866-021-02179-1.
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  2. Ejikeugwu, C., S.O. Hasson, R.M. Al-Mosawi, M.K. Alkhudhairy and M. Saki et al., 2020. Occurrence of FOX AmpC gene among Pseudomonas aeruginosa isolates in abattoir samples from south-eastern Nigeria. Rev. Med. Microbiol., 31: 99-103.
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  3. Ejikeugwu, C., M. Saki, E. Nwakaeze, P. Eze, O. Chinedu et al., 2019. Characterization of metallo-β-lactamases-encoding genes blaIMP-1 and blaVIM-1 amongst Klebsiella pneumoniae from abattoir samples of Ebonyi state, southeastern Nigeria. Gene Rep., Vol 16. 10.1016/j.genrep.2019.100428.
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  4. Uzoeto, H.O., T.E. Ayogu, E.A. Nwakaeze, I.R. Iroha and C. Ejikeugwu, 2018. In vitro antibacterial activity of Adenia cissampeloides plant extracts on bacteria isolated from fishes recovered from Uwana river, Ebonyi state, Nigeria. J. Middle East North Afr. Sci., 4: 1-7.
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  5. Ugwu, M.C., J.O. Igbokwe, U. Okezie, P.M. Eze, C.P. Ejikeugwu and C.O. Esimone, 2018. Prevalence of ESBLs and MBLs among Escherichia coli and Klebsiella pneumonia isolates from a Nigerian Abattoir. J. Trop. Dis., Vol. 6. 10.4172/2329-891X.1000261.
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  6. Okonkwo, E.C., J.O. Orji, O. Nworie and P.C. Ejikeugwu, 2018. Frequency and antibiogram of urinary isolates of Klebsiella pneumonia isolated from urine samples of apparently healthy school children. SciFed. J. Applied Microbiol., Vol. 1. .
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  7. Okafor, U.U., M.C. Ugwu, C.S. Nworu, B.C. Ugwu, C.P. Ejikeugwu, E.C. Nwanegbo, C.O. Esimone, 2018. Evaluation of the efficacy and safety of hepatitis B vaccines sold in open markets in South Eastern Nigeria. SOJ Immunol., 5: 1-8.
  8. Ngozi, A., N. Agabus, O. Eucharia, Udu-Ibiam Onyinyechi, E. Abraham, E. Chika and I. Ifeanyichukwu, 2018. A three year study on the prevalence and antibiotic susceptibility pattern of Escherichia coli isolated from cloacal swabs of wild and domestic birds in Ebonyi state, Nigeria. EC Microbiol., 14: 266-273.
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  9. Ejikeugwu, C., O. Nworie, M.V. Agah, B. Oguejiofor and K. Ovia et al., 2018. Bacteriological and antibiogram of AmpC producing Enterobacteriaceae isolated from abattoir. Microbiol. Curr. Res., 2: 19-23.
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  10. Chika, E., N.F. Joseph, E. Chijioke and E. Peter, 2018. Detection of constitutive- and inducible-clindamycin-resistance in clinical isolates of Staphylococcus aureus from a federal teaching hospital in Abakaliki, Nigeria. J. Bacteriol. Infect. Dis., 2: 31-34.
    Direct Link  |  
  11. Chika, E., E. Charles, I. Ifeanyichukwu and A. Michael, 2018. First detection of FOX-1 AmpC β-lactamase gene expression among Escherichia coli isolated from abattoir samples in Abakaliki, Nigeria. Oman Med. J., 33: 243-249.
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  12. Chika, E., D. Carissa, O. Benigna, E. Peter and O. Blessing et al., 2018. Bacteriological investigation of antibiogram, multiple antibiotic resistance index and detection of metallo-β-lactamase (MBL) in Klebsiella species and Pseudomonas aeruginosa of abattoir origin. Clin. Biotechnol. Microbiol., 2: 355-360.
  13. Chika, E., A. Ngozi, N. Agabus, K. Ovia and A. Cyril et al., 2018. Phenotypic detection of metallo-β-lactamase (MBL) and AmpC enzymes among abattoir isolates of Escherichia coli and Klebsiella species in Abakaliki, Nigeria. Trends Med., 18: 1-4.
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  14. Chidinma, I., I. Ifeanyichukwu, N. Emmanuel, A. Monique and E. Chika, 2018. Evaluation of the metal content and bacteriological parameters of selected borehole water sources in Abakaliki, Nigeria. Int. J. Waste Resour., Vol. 8. 10.4172/2252-5211.1000338.
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  15. Ogbedi, C.M., M.C. Ugwu, C.C. Ezea, U. Okezie and C.P. Ejikeugwu, 2017. Antibacterial evaluation of ethanolic leaf extract of Gongronema latifolium benth on MDR bacteria from clinical specimens. Clin. Biotechnol. Microbiol., 1: 156-164.
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  16. Iroha, I.R., E. Okoye, C.A. Osigwe, I.B. Moses and C.P. Ejikeugwu, 2017. Isolation, phenotypic characterization and prevalence of ESBL-producing Escherichia coli and Klebsiella species from orthopedic wounds in National Orthopedic Hospital Enugu (NOHE), South East Nigeria. J. Pharm. Care Health Syst, Vol. 4. .
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  17. Ikechukwu, O., I. Ifeanyichukwu, E. Chika, E.U. Agwu and O. Ogbonnaya, 2017. Cockroaches (Periplaneta Americana) as possible reservoirs of Extended Spectrum Beta-Lactamase (ESBL)-producing pathogenic bacteria. Int. J. Res. Biosci., 6: 41-49.
  18. Ifeanyichukwu, I., O. Elizabeth, N. Emmanuel, A. Nnabuife, I. Chidinma and E. Chika, 2017. Antibiogram of uropathogenic Escherichia coli isolates from urine samples of pregnant women visiting St. Vincent hospital, Ndubia for ante-natal care. J. Mol. Biol. Biotechnol., Vol. 2. .
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  19. Ifeanyichukwu, I., E. Chika, A. Ogonna, I. Chidinma and A. Monique et al., 2017. Prevalence and antibiogram of salmonella species isolated from poultry products in Ebonyi state, Nigeria. J. Adv. Vet. Anim. Res., 3: 353-359.
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  20. Eze, C., I.R. Iroha, S.C. Eluu, P.C. Ejikeugwu and C.S. Iroha et al., 2017. Comparative studies on the antibacterial activities of leaf extracts of Azadirachta indica and Psidium guajava and antibiotics on methicillin and vancomycin resistant Staphylococcus aureus. Pharm. Biol. Eval., 4: 155-161.
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  21. Emmanuel, U., I. Ifeanyichukwu, E. Chika, O. Chike and N. Chinyere, 2017. Isolation and characterization of bacteria and fungi associated with biodegradation of municipal solid wastes in Abakaliki metropolis, Nigeria. Int. J. Environ. Agric. Biotechnol., 2: 1294-1304.
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  22. Chika, E.O., A.R. Nneka, O.N. Dorothy and E. Chika, 2017. Multi-drug resistant Pseudomonas aeruginosa isolated from hospitals in Onitsha, South-Eastern Nigeria. Int. Arch. BioMed. Clin. Res., 3: 22-26.
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  23. Chika, E., I. Ifeanyichukwu, O.A. Clement, U. Malachy and E. Peter, 2017. Multiple antibiotic resistance, antibiogram and phenotypic detection of metallo-beta-lactamase (MBL) from Escherichia coli of poultry origin. J. Appl. Microbiol. Biochem., Vol. 1. .
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  24. Chika, E., I. Ifeanyichukwu, O. Benigna, O.O. Loveday and E. Stanley et al., 2017. Emerging multidrug resistant metallo-β-lactamases (MBLs) positive Klebsiella species from cloacal swabs of poultry birds. J. Bacteriol. Parasitol., Vol. 8. 10.4172/2155-9597.1000305.
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  25. Chika, E., E. Peter, O. Eucharia, E. Chika, K. Ovia, I. Ifeanyichukwu and E. Charles, 2017. Plasmid curing, Beta-lactamase production, antibiogram and Metallo-β-Lactamase (MBL) detection in Escherichia coli and Klebsiella species from non-hospital sources of Abattoir and poultry. Global Vet., 19: 555-561.
  26. Chika, E., E. Charles, I. Ifeanyichukwu, I.D. Okeh and U. Malachy et al., 2017. Molecular identification of MBL genes blaIMP-1 and blaVIM-1 in Escherichia coli strains isolated from abattoir by multiplex PCR technique. Res. J. Microbiol., 12: 266-273.
    CrossRef  |  Direct Link  |  
  27. Chika, E., E. Charles, I. Ifeanyichukwu, C.O. Eucharia and G. Thaddeus et al., 2017. Detection of metallo-β-lactamase (MBL) among carbapenem-resistant gram-negative bacteria from rectal swabs of cow and cloacae swabs of poultry birds. Ann. Med. Health Sci. Res., 7: 51-56.
    Direct Link  |  
  28. Chika, E., D. Carissa, E. Chijioke and I. Ifeanyichukwu, 2017. Prevalence of AmpC a-lactamase-producing Pseudomonas aeruginosa Isolates from Feacal Matter of Cow. J. Microbiol. Exp., 4: 1-4.
  29. Ugwu, M.C., G.I. Edeani, C.P. Ejikeugwu, U. Okezie and S.O. Ejiofor, 2017. Antibiotic susceptibility profile of Escherichia coli and Salmonella causing childhood diarrhoea in Awka municipality, South-eastern Nigeria. Clin. Microbiol., Vol. 6. 10.4172/2327-5073.1000277.
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  30. Ngozi, A., I. Ifeanyichukwu, N. Agabus, E. Chika, N. Emmanuel, U. Ekenem and A. Orji, 2017. Occurrence of ESBL-producing Escherichia coli and Klebsiella pneumoniae in urinary tract infection (UTI) patients. Int. J. Med. Pharm. Res., 5: 59-65.
  31. Iroha, I.R, T.O. Ariom, I.B. Moses, P.C. Ejikeugwu and A.C. Nwuzo et al., 2017. Isolation, antibiogram and characterization of vancomycin-resistant Staphylococcus aureus from clinical and community isolates in Abakaliki, Ebonyi state, Nigeria. Indo Am. J. Pharm. Sci., 4: 688-697.
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  32. Chinedu, O., I. Ifeanyichukwu, E. Chika, I. Chidinma, N. Emmanuel, A. Monique and U. Emmanuel, 2017. Phenotypic detection of methicillin resistance in pathogenic Staphylococcus aureus by disk method. World J. Pharm. Life Sci., 3: 119-123.
  33. Chika, E., D. Carissa, I. Ifeanyichukwu, O. Benigna, O. Loveday and U. Malachy, 2017. Detection of Escherichia coli strains producing AmpC enzymes using Ceftazidime-Imipenem Antagonism Test (CIAT). Int. J. Res. Stud. Biosci., 5: 41-45.
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  34. Chika, E., D. Carissa, E. Stanley, O. Benigna, E. Chika, O. Lilian and I. Ifeanyichukwu, 2017. Isolation and phenotypic detection of metallo-beta-lactamase (MBL)-producing Klebsiella species from Cow Anal Swabs. Global J. Pharm. Pharm. Sci., 2: 1-5.
    Direct Link  |  
  35. Orji, O.L., B.O. Olayinka, B. Afolabi, P.C. Ejikeugwu and E.A. Nwakaeze et al., 2016. Molecular detection of Panton-Valentine Leukocidin (PVL) toxins in clinical isolates of Staphylococcus aureus from Maitama district hospital, Abuja, Nigeria. J. Med. Microbiol. Diagn., 5: 1-4.
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  36. Iroha, I.R., O.F. Igwe, I.B. Moses, C.S. Iroha and E.A. Nwakaeze et al., 2016. Phenotypic characterization of Extended Spectrum Beta-Lactamase (ESBL)-producing clinical isolates of escherichia coli and klebsiella spp from Mile Four general hospital, Abakaliki. Int. J. Health Sci. Res., 6: 65-73.
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  37. Iroha, I.R., O.B. Eromonsele, I.B. Moses, F.N. Afiukwa, A.E. Nwakaeze and P.C. Ejikeugwu, 2016. In-vitro antibiogram of multi-drug resistant bacteria isolated from Ogbete abattoir effluent in Enugu state, Nigeria. Int. Res. J. Public Environ. Health, 3: 1-6.
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  38. Iroha, I.R., F.N. Okafor-Alu, E.N. Ugbo, C.P. Ejikeugwu and A.C. Nwuzo et al., 2016. Antibiogram of pathogenic bacteria isolated from pre-and post-surgery Vesicovaginal Fistula (VVF) patients in Abakaliki, Ebonyi state. Int. J. Pharm. Sci. Res., 7: 1005-1011.
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  39. Ike, B., M.C. Ugwu, M.N. Ikegbunam, D. Nwobodo, C. Ejikeugwu, T. Gugu and C.O. Esimone, 2016. Prevalence, antibiogram and molecular characterization of comunity-acquired methicillin-resistant Staphylococcus Aureus in AWKA, Anambra Nigeria. Open Microbiol. J., 10: 211-221.
    CrossRef  |  PubMed  |  Direct Link  |  
  40. Henrietta, U., A. Thomas, I. Ifeanyichukwu, N. Emmanuel and E. Chika, 2016. Cluster analysis of aerobic heterotrophic bacteria from Clarias gariepinus and Tilapia zillii in Unwana river, Ebonyi state, Nigeria. Int. J. Environ. Agric. Res., 2: 43-49.
  41. Chika, E., I. Ifeanyichukwu, U. Malachy, O. Benigna and E.C. Adaora et al., 2016. Phenotypic detection of AmpC enzymes and antimicrobial susceptibility of Klebsiella spp. isolated from abattoir. Int. J. Appl. Microbiol. Biotechnol. Res., 4: 117-121.
    Direct Link  |  
  42. Chika, E., I. Ifeanyichukwu, D. Carissa, A. Thomas and O. Okoro et al., 2016. Occurrence of metallo-beta-lactamase-producing enterobacteriaceae from a local poultry farm in Abakaliki, Nigeria. Int. J. Appl. Pharm. Sci. Res., 1: 70-75.
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  43. Chika, E., E. Chijioke, I. Ifeanyichukwu, O. Jerry and E. Stanley et al., 2016. Antibiogram and detection of Metallo-Beta-Lactamase (MBL) positive Escherichia coli isolates from abattoir. Nat. Sci., 14: 65-69.
    Direct Link  |  
  44. Chika, E., E. Charles, I. Ifeanyichukwu, U. Chigozie, E. Chika, D. Carissa and A. Michael, 2016. Phenotypic detection of AmpC beta-lactamase among anal Pseudomonas aeruginosa isolates in a Nigerian abattoir. Arch. Clin. Microbiol., Vol. 7. .
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  45. Chidinma, I., O. Ogbonnaya, E. Chika, I. Ifeanyichukwu, N. Emmanuel and N. Agabus, 2016. Comparative analysis on the antimicrobial activity of herbal extracts (Garcinia Kola and Azadirachta Indica) and conventional antibiotics against bacterial pathogens isolated from orthopedic wound infections. Int. J. Biol. Pharm. Allied Sci., 5: 1468-1476.
    Direct Link  |  
  46. Chidinma, I., O. Matthew, E. Grace, N. Emmanuel and E. Chika et al., 2016. Bacteriological and physicochemical parameters of some selected borehole water sources in Abakaliki metropolis, Nigeria. Int. J. Community Med. Public Health, 3: 3271-3277.
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  47. Romanus, I.I., O. Ekuma, J. Udida, M.I. Benjamin., E.P. Chika, U.E. Nnabuike and N.A. Emmanuel, 2016. Comparative assessment of antibiotic sensitivity profiles of biofilm-producing bacterial isolates from clinical and water samples in Abakaliki, Ebonyi state, Nigeria. Int. Res. J. Humanities Eng. Pharm. Sci., 1: 1-6.
  48. Orji, J., K. Aleke, C. Ejikeugwu, A. Nwachi, I. Moses, S. Eluu and E. Ugbo, 2016. Bioethanol production from corncob hydrolysed by cellulase of Aspergillus niger using Zymomonas mobilis and Saccharomyces cerevisiae isolated from palm wine. Int. J. Curr. Res. Biosci. Plant Biol., 3: 39-45.
  49. Oguejiofor, B.J., E.C. Obiukwu, I.R. Iroha, E.A. Nwakaeze and A.C. Nwachi et al., 2016. Microbial ecology and physicochemical quality of brewery effluent and water samples from a brewery plant. Academia J. Environ. Sci., 4: 178-184.
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  50. Joshua, E., I. Ifeanyichukwu, E. Chika, N. Okoro, D. Carissa, N. Emmanuel and A. Chukwuka, 2016. In vitro evaluation of antibacterial activity of Parkia biglobosa, Hymenocardia acida and Zanthoxylum zanthoxyloides extracts on pathogenic Staphylococcus aureus isolates. Int. J. Life Sci., 5: 72-77.
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  51. Iroha, I.R., E. Egwu, F.N. Afiukwa, I.B. Moses and A.C. Nwuzo et al., 2016. Phenotypic screening for AmpC and extended spectrum beta lactamase (ESBL) producing Pseudomonas aeruginosa in clinical samples collected from federal teaching hospital Abakaliki (FETHA I and II). Int. J. Pharm. Res. Bio-Sci., 5: 9-24.
  52. Grace, U., U. Emmanuel, E. Chika, M. Ikechukwu, E. Stanley and I. Donatus, 2016. Phytochemical and antimicrobial analysis of hulls and nuts of Tetracarpidium conophorum (Ukpa) on pathogenic organisms. Int. J. Allied Med. Sci. Clin. Res., 4: 337-343.
  53. Chika, E., D. Carissa, I. Ifeanyichukwu, U. Malachy and N. Emmanuel et al., 2016. Phenotypic screening of clinical isolates of Escherichia coli, Klebsiella pneumoniae and Pseudomonas aeruginosa for Metallo-Beta-Lactamase. Life Sci. J., 13: 77-82.
  54. Aniokette, U., I.R. Iroha, P.C. Ejikeugwu, C.S. Iroha, M.I. Ajah and A.E. Nwakaeze, 2016. Occurrence of multi-drug resistance Gram negative bacteria from poultry and poultry products sold in Abakaliki metropolis. J. Agric. Sci. Food Technol., 2: 119-124.
  55. Ugwu, M.C., N.M. Mokwe, P.C. Ejikeugwu, E.C. Enemor, C.O. Eze, B.C. Ugwu and T.H. Gugu, 2015. Antibiogram of Staphylococcus aureus from healthy school pupils in Agulu, southeastern Nigeria. Int. J. Res. Pharm. Biosci., 2: 5-9.
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  56. Ruth, O.O., E.C. Adaora, N.O. Victor, O.C. Felix, C.E. Stanley and E. Chika, 2015. Evaluation of the effect of starvation on blood glucose level and body weight of wistar albino rats. Int. J. Biochem. Res. Rev., 8: 1-8.
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  57. Orji, J.O., A.C. Nwuzo, P.C. Ejikeugwu, E.N. Ugbo, I.B. Moses, E.A. Nwakaeze and C.P. Nwankwo, 2015. Antifungal activities of Ocimum gratissimum and Gongronema latifolium leaves on colletotrichum species isolated from spoilt tomatoes. Int. J. Pharm. Sci. Invention, 4: 42-45.
  58. Odimegwu, D.C., C. Ejikeugwu and C.C. Esimone, 2015. Lichen Secondary Metabolites as Possible Antiviral Agents. In: Lichen Secondary Metabolites. Rankovic, B. (Ed.). Springer International Publishing, Switzerland., ISBN: 978-3-319-13373-7, pp: 165-177..
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  59. Iroha, I.R., N.M. Chibuko, I.B. Moses, P.C. Ejikeugwu, E.N. Ugbo, E.A. Nwakaeze and N.B. Agumah, 2015. Antibiotic susceptibility patterns of Streptococcus pneumoniae isolated from the nasopharyngeal mucosa of children in Enugu metropolis, Nigeria. Int. J. Curr. Microbiol. Applied Sci., 4: 1-9.
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  60. Iroha, I., F. Afiukwa, A. Oji, P. Ejikeugwu and E. Nwakeze, 2015. Occurrence of extended spectrum beta lactamase producing escherichia coli from human clinical and wild birds (pigeons, bats, parrots and ducks) samples from Ebonyi state, Nigeria. World J. Pharm. Sci., 4: 20-29.
  61. Ifeanyichukwu, I., M. Nicodemus, E. Chika, N. Emmanuel and U. Emmanuel, 2015. Detection of biofilm-producing isolates of Aeromonas species from drinking water sources in Ezza south local government area of Ebonyi state, Nigeria. J. Pharm. Chem. Biol. Sci., 3: 316-323.
  62. Ifeanyichukwu, I., E. Chika, N. Emmanuel, O. Anthonia, A. Ngozi and U.I. Esther, 2015. Community acquired methicillin resistant Staphylococcus aureus (ca-MRSA) carriage amongst tertiary school students. Am. J. Sci. Technol., 2: 18-21.
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  63. Ifeanyichukwu, I., E. Chika, N. Emmanuel, O. Anthonia, A. Ngozi and N. Agabus, 2015. Preliminary investigation of the antibacterial activity of Psidium guajava extracts. Eur. J. Med. Plants, 7: 26-30.
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  64. Enemor, E.C., T.N. Akagha, K.G. Ngwoke, T.H. Gugu and A.N. Oli et al., 2015. Phytochemical analysis and antimicrobial activity of ethanolic stem extracts of cnestis ferruginea on multidrug resistant bacteria isolated from raw retail meat sold in Awka, Nigeria. J. Pharm. Sci. Res., 7: 1044-1049.
  65. Elom, P.C., I.R. Iroha, I.H. Egwu and P.C. Ejikeugwu, 2015. Phenotypic screening for the prevalence of methicillin resistant Staphylococcus aureus Among Prison Inmates in Enugu State, Nigeria. Asian J. Biochem. Pharm. Res., 1: 172-177.
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  66. Akagha, T.N., T.H. Gugu, E.C. Enemor, P.C. Ejikeugwu, B.C. Ugwu and M.C. Ugwu, 2015. Prevalence and antibiogram of salmonella species and Staphylococcus aureus in retail meats sold in Awka metropolis, southeast Nigeria. Int. J. Biol. Pharm. Res., 6: 924-929.
  67. Ogah, C.N, O. Ogbu, A.C. Nwuzo, E.C. Okonkwo and F.N. Afiukwa et al., 2015. Investigation of Schistosoma species in pond water snails across Ebonyi state, south-eastern Nigeria. Eur. J. Biomed. Pharm. Sci., 2: 59-63.
  68. Jerry, O., U. Emmanuel, E. Chika, O. Eucharia and N. Agabus et al., 2015. Microbial contamination of ready-to-eat fried chicken meat sold in two selected motor park points in Abakaliki, Ebonyi state, Nigeria. Int. J. Pure Appl. Biosci., 3: 271-275.
  69. Ifeanyichukwu, I., O. Inya, E. Chika, N. Emmanuel, N. Agabus, A. Ngozi and U.I. Esther, 2015. Prevalence of methicillin-resistant S. aureus (MRSA) among apparently healthy students in Afikpo, Ebonyi state, Nigeria. Issues Biol. Sci. Pharm. Res., 3: 1-4.
  70. Ifeanyichukwu, I., I. Ifeoma, E. Chika, N. Emmanuel and E. Egwu et al., 2015. Prevalence and antibiogram of pathogenic gram negative bacteria isolated from patients seeking medical care in a tertiary hospital in Abakaliki, Nigeria. Global Adv. Res. J. Med. Med. Sci., 4: 455-460.
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  71. Egwu, I.H., I.R. Iroha, P.C. Elom, M.M. Agwu and P.C. Ejikeugwu, 2015. Acinetobacter baumannii prevalence in Federal teaching hospital, Abakaliki, Nigeria. J. Pharm. Biol., 5: 39-43.
  72. Chika, E., I. Ifeanyichukwu, O. Jerry, U. Malachy and O. Eucharia et al., 2015. Antibiogram of ESBL-producing Pseudomonas aeruginosa isolates of nosocomial origin. Eur. J. Pharm. Med. Res., 2: 92-99.
  73. Carissa, D., N. Edward, E. Chika, O. Eucharia, O. Chukwuebuka and E. Charles, 2015. Prevalence and antibiogram of extended spectrum β-lactamase (ESBL)-producing Enterobacteriaceae in asymptomatic individuals. Researcher, 7: 34-39.
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  74. Anthonia, O., I. Ifeanyichukwu, E. Chika, N. Emmanuel, N. Agabus and A. Ngozi, 2015. Phenotypic characterization of ESBL-producing Escherichia coli from animal feacal dung. Int. J. Pharma Res. Health Sci., 3: 836-840.
  75. Nwakaeze, A.E., I.R. Iroha, P.C. Ejikeugwu, F.N. Afiukwa and O.E. Udu-Ibiam et al., 2014. Evaluation of antibacterial activities of some Nigerian medicinal plants against some resistant bacteria pathogens. Afr. J. Microbiol. Res., 8: 1832-1836.
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  76. Ikegbunam, M.N., L.O. Anagu, I.R. Iroha, C.E. Ejikeugwu and C.O. Esimone, 2014. Abattoirs as non-hospital source of extended spectrum beta lactamase producers: Confirmed by the double disc synergy test and characterized by matrix-assisted laser desorption/ionization time of flight mass spectrometry. Plos One, Vol. 9. 10.1371/journal.pone.0094461.
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  77. Ifeanyichukwu, I., E. Chika, N. Emmanuel, O. Anthonia, A. Ngozi and N. Agabus, 2014. Medicinal efficacy of methanol and ethanol crude extracts of Mangifera indica leaf. J. Microbiol. Res., 4: 180-182.
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  78. Eze, P.M., E.E. Ajaegbu, P.C. Ejikeugwu, R.N. Egbuna, C.C. Abba and C.O. Esimone, 2014. Evaluation of the quality of commercial antibacterial discs available in Nigeria. Br. J. Pharm. Res., 4: 2548-2562.
  79. Ejikeugwu, C., B. Umeokoli, I. Iroha, M. Ugwu and C. Esimone, 2014. Phytochemical and antibacterial screening of crude extracts from leaves of wonderful Kola. Am. J. Life Sci., 2: 9-12.
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  80. Chinwe, N., A. Thomas, I. Ifeanyichukwu, E. Chika, N. Emmanuel, O. Anthonia and I. Donatus, 2014. Cloacal feacal carriage and occurrence of antibiotic resistant Escherichia coli in chicken grown with and without antibiotic supplemented feed. J. Vet. Med. Anim. Health, 6: 91-94.
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