Mobile phones have rapidly increased globally, and it is believed that there are as many mobile phones as there are humans on Earth. Mobile phones can harbor pathogenic microorganisms, especially as a majority of mobile phones are hand-held. The present study investigated the contamination of mobile phones belonging to nursing mothers and the potential health risk to their infants. A total of 180 mothers with infants not more than 24 months old were randomly selected from different parts of the Maiduguri metropolis. A questionnaire was used to generate information on risk factors that may lead to infants’ vulnerability. Swabs samples were collected from mobile phone surfaces and cultured using aseptic techniques. Positive bacterial cultures were observed in 75.56% (n = 136) of the samples collected. The bacterial isolates were identified to be Staphylococcus epidermidis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Proteus sp. Klebsiella pneumoniae, and Micrococcus sp. with occurrence rate ranging between 26.47%, and 2.94%. Demographic data showed that infants of 31% mothers were vulnerable to infection and that the ages of infants, ages of mothers, phone usage rate, lack of regular cleaning of phones, and absence of phone cover may play a significant role in infants’ vulnerability. However, the educational status of the mothers and area of residence had no significant effect on vulnerability. Therefore, there is a need to increase awareness among nursing mothers to avoid infants’ contact with mobile phones; and the need for regular cleansing of mobile phones using disinfectants.

1. I. Kilic, M. Ozaslan, I. Karagoz, Y. Zer, V. Davutoglu et al., “The microbial colonisation of mobile phone used by healthcare staffs,” Pakistan Journal of Biological Sciences, vol. 12, no. 11, pp. 882–884, 2009.
2. T. Ekrakene and C. Igeleke, “Micro-organisms associated with public mobile phones along benin-sapele express way, Benin City, Edo State of Nigeria,” Journal of Applied Sciences Research, vol. 3, no. 12, pp. 2009–2012, 2007.
3. J. F. Meadow, A. E. Altrichter, and J. L. Green, “Mobile phones carry the personal microbiome of
   their owners,” PeerJ, vol. 2, pp. 1–14, 2014. doi: https://doi.org/10.7717/peerj.447
4. Cisco Mobile VNI. (2019) Cisco visual networking index: Global mobile data traffic forecast update. [Online]. Available: https://bit.ly/2TYO1DG
5. S. Amala and I. Ejikema, “Bacteria associated with the mobile phones of medical personnel,” American Journal of Biomedical Sciences, vol. 7, no. 1, pp. 26–32, 2015. doi: https://doi.org/10.5099/aj150100026
6. R. Brady, S. Fraser, M. Dunlop, S. Paterson-Brown, and A. Gibb, “Bacterial contamination of mobile communication devices in the operative environment,” Journal of Hospital Infection, vol. 66, no. 4, pp. 397–398, 2007. doi: https://doi.org/10.1016/j.jhin.2007.04.015
7. A. Shahaby, N. Awad, A. El-Tarras, and A. Bahobial, “Mobile phone as potential reservoirs of bacterial pathogens,” African Journal of Biotechnology, vol. 11, no. 92, pp. 15 896–15 904, 2012. doi: https://doi.org/10.5897/ajb12.1836
8. M. S. Lakshmi and B. Lakshmi, “Mobile phones:Potential threat in infection control,” Indian Journal of Basic and Applied Medical Research, vol. 3, no. 2, pp. 496–500, 2014.
9. K. O. Akinyemi, A. D. Atapu, O. O. Adetona, and A. O. Coker, “The potential role of mobile phones in the spread of bacterial infections,” The Journal of Infection in Developing Countries, vol. 3, no. 8, pp. 628–632, 2009. doi: https://doi.org/10.3855/jidc.556
10. F. Ulger, S. Esen, A. Dilek, K. Yanik, M. Gunaydin, and H. Leblebicioglu, “Are we aware how contaminated our mobile phones with nosocomial pathogens?” Annals of Clinical Microbiology and Antimicrobials, vol. 8, no. 1, pp. 1–4, 2009.
11. M. Goel and A. Goel, “Beware! your phone is ’bugged’ mobile phones of dental professionals a potential source of bacterial contamination-a bacte-riological study,” Indian Journal of Dental Sciences, vol. 1, no. 1, pp. 43–47, 2009.
12. Y. Jagadeesan, M. Deepa, and M. Kannagi, “Mobilephones as fomites in miocrobial dissemination,” International Journal of Current Science, vol. 5, pp. 6–14, 2013.
13. D. N. Tagoe, V. K. Gyande, and E. O. Ansah, “Bacterial contamination of mobile phones: When your mobile phone could transmit more than just a call,” Central Microbiology Journal, vol. 2, no. 10, 2011. [Online]. Available: https://bit.ly/2BpSHKY
14. R. Brady, A. Wasson, I. Stirling, C. McAllister, and N. Damani, “Is your phone bugged? The incidence of bacteria known to cause nosocomial infection on healthcare workers’ mobile phones,” Journal of Hospital Infection, vol. 62, no. 1, pp. 123–125, 2006. doi: https://doi.org/10.1016/j.jhin.2005.05.005
15. United Nations Children’s Fund (UNICEF), “Levels and trends in child mortality. estimates developed by the UN inter-agency group for child mortality estimation 2017 report,” United Nations Children’s Fund (UNICEF), Tech. Rep., 2018. [Online]. Available: https://bit.ly/2Yut9qh
16. H. J. Benson, Microbiological Applications: Laboratory Manual in General Microbiology. New York, NY: McGraw-Hill, 2002.
17. J. G. Holt, N. R. Krieg, P. H. A. Sneath, J. T. Stanley, and S. T. William, Bergey’s Manual of Determinative Bacteriology. Baltimore, MD: Williams and Wilikins, 1994.
18. S. Suganya and J. H. V. Sumathy, “Isolation andidentification of bacteria from covered and uncovered mobile phones,” International Journal of Environmental Sciences, vol. 3, no. 1, pp. 44–54, 2012.
19. S. S. Walia, A. Manchanda, R. S. Narang et al., “Cellular telephone as reservoir of bacterial contamination: Myth or fact,” Journal of Clinical and Diagnostic Research: JCDR, vol. 8, no. 1, pp. 50–53, 2014. doi: https://doi.org/10.7860/JCDR/2014/6398.3948
20. A. Beckstrom, P. Cleman, F. Cassis-Ghavami, andM. Kamitsuka, “Surveillance study of bacterial contamination of the parent’s cell phone in the NICU and the effectiveness of an anti-microbial gel in reducing transmission to the hands,” Journal of Perinatology, vol. 33, no. 12, pp. 960–963, 2013. doi: https://doi.org/10.1038/jp.2013.108
21. S. N. Anuradha, S. A. Kumar, Mekhanayakee, W. Y.Shyen, and A. Rao, “Study on awareness of microbial contamination through mobile phones,” Asian Pacific Journal of Health Science, vol. 3, pp. 313–323, 2016. doi: https://doi.org/10.21276/apjhs.2016.3.4.50
22. M. Widerström, “Commentary: Significanceof staphylococcus epidermidis in health care-associated infections, from contaminant to clinically relevant pathogen: This is a wake-up call!” Journal of Clinical Microbiology, vol. 54, no. 7, pp. 1679–1681, 2016. doi: https://doi.org/10.1128/jcm.00743-16
23. K. Becker, C. Heilmann, and G. Peters, “Coagulase-negative staphylococci,” Clinical Microbiology Reviews, vol. 27, no. 4, pp. 870–926, 2014.
24. A. Z. Arif, A. Lakshmanan, M. Ramraj, B., Logaraj, and A. Swaminathan, “Cell phones: The new vehicle of bacterial transmission,” National Journal of Laboratory Medicine, vol. 4, no. 3, pp. 43–47, 2015.
25. E. Gondar, “Isolation and characterization of bacteria from mobile phones of students and employees at University of Gondar, Ethiopia,” Bulletin of Pharmaceutical Research, vol. 5, no. 3, pp. 96–100, 2015.
26. N. Parhizgari, A. farajzadeh Sheikh, and P. Sadeghi, “Identification of bacteria isolated from mobile phones of three medical and teaching hospitals administrative and medical staff in Ahvaz,” Jentashapir Journal of Cellular and Molecular Biology, vol. 4, no. 5, pp. 397–403, 2013.
27. U. Arora, P. Devi, A. Chadha, and S. Malhotra, “Cellphones: A modern stayhouse for bacterial pathogens,” JK Science, vol. 11, no. 3, pp. 127–129, 2009.

Ismail, H. Y. (2018). Vulnerability of infants to infections due to contamination of mobile phones of nursing mothers in maiduguri metropolis, nigeria. International Journal of Health and Medical Sciences, 4(3), 64–71. doi:https://doi.org/10.20469/ijhms.40002-3