Diagnostic and Treatment Difficulties of Pyelonephritis in Pregnancy in Resource-Limited Settings

Rose McGready Shoklo Malaria Research Unit, Mae Sot, Tak, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Vaccinology and Tropical Medicine, Churchill Hospital, Oxford; Department of Microbiology, Imperial College National Health Service (NHS) Trust, London, United Kingdom; Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Department of Medicine, University of Cambridge, Addenbrooke's Hospital

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Vanaporn Wuthiekanun Shoklo Malaria Research Unit, Mae Sot, Tak, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Vaccinology and Tropical Medicine, Churchill Hospital, Oxford; Department of Microbiology, Imperial College National Health Service (NHS) Trust, London, United Kingdom; Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Department of Medicine, University of Cambridge, Addenbrooke's Hospital

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Elizabeth A. Ashley Shoklo Malaria Research Unit, Mae Sot, Tak, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Vaccinology and Tropical Medicine, Churchill Hospital, Oxford; Department of Microbiology, Imperial College National Health Service (NHS) Trust, London, United Kingdom; Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Department of Medicine, University of Cambridge, Addenbrooke's Hospital

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Saw Oo Tan Shoklo Malaria Research Unit, Mae Sot, Tak, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Vaccinology and Tropical Medicine, Churchill Hospital, Oxford; Department of Microbiology, Imperial College National Health Service (NHS) Trust, London, United Kingdom; Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Department of Medicine, University of Cambridge, Addenbrooke's Hospital

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Mupawjay Pimanpanarak Shoklo Malaria Research Unit, Mae Sot, Tak, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Vaccinology and Tropical Medicine, Churchill Hospital, Oxford; Department of Microbiology, Imperial College National Health Service (NHS) Trust, London, United Kingdom; Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Department of Medicine, University of Cambridge, Addenbrooke's Hospital

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Samuel Jacher Viladpai-nguen Shoklo Malaria Research Unit, Mae Sot, Tak, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Vaccinology and Tropical Medicine, Churchill Hospital, Oxford; Department of Microbiology, Imperial College National Health Service (NHS) Trust, London, United Kingdom; Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Department of Medicine, University of Cambridge, Addenbrooke's Hospital

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Wilarat Jesadapanpong Shoklo Malaria Research Unit, Mae Sot, Tak, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Vaccinology and Tropical Medicine, Churchill Hospital, Oxford; Department of Microbiology, Imperial College National Health Service (NHS) Trust, London, United Kingdom; Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Department of Medicine, University of Cambridge, Addenbrooke's Hospital

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Stuart D. Blacksell Shoklo Malaria Research Unit, Mae Sot, Tak, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Vaccinology and Tropical Medicine, Churchill Hospital, Oxford; Department of Microbiology, Imperial College National Health Service (NHS) Trust, London, United Kingdom; Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Department of Medicine, University of Cambridge, Addenbrooke's Hospital

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Stephane Proux Shoklo Malaria Research Unit, Mae Sot, Tak, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Vaccinology and Tropical Medicine, Churchill Hospital, Oxford; Department of Microbiology, Imperial College National Health Service (NHS) Trust, London, United Kingdom; Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Department of Medicine, University of Cambridge, Addenbrooke's Hospital

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Nicholas P. Day Shoklo Malaria Research Unit, Mae Sot, Tak, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Vaccinology and Tropical Medicine, Churchill Hospital, Oxford; Department of Microbiology, Imperial College National Health Service (NHS) Trust, London, United Kingdom; Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Department of Medicine, University of Cambridge, Addenbrooke's Hospital

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Pratap Singhasivanon Shoklo Malaria Research Unit, Mae Sot, Tak, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Vaccinology and Tropical Medicine, Churchill Hospital, Oxford; Department of Microbiology, Imperial College National Health Service (NHS) Trust, London, United Kingdom; Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Department of Medicine, University of Cambridge, Addenbrooke's Hospital

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Nicholas J. White Shoklo Malaria Research Unit, Mae Sot, Tak, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Vaccinology and Tropical Medicine, Churchill Hospital, Oxford; Department of Microbiology, Imperial College National Health Service (NHS) Trust, London, United Kingdom; Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Department of Medicine, University of Cambridge, Addenbrooke's Hospital

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François Nosten Shoklo Malaria Research Unit, Mae Sot, Tak, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Vaccinology and Tropical Medicine, Churchill Hospital, Oxford; Department of Microbiology, Imperial College National Health Service (NHS) Trust, London, United Kingdom; Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Department of Medicine, University of Cambridge, Addenbrooke's Hospital

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Sharon J. Peacock Shoklo Malaria Research Unit, Mae Sot, Tak, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Vaccinology and Tropical Medicine, Churchill Hospital, Oxford; Department of Microbiology, Imperial College National Health Service (NHS) Trust, London, United Kingdom; Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Department of Medicine, University of Cambridge, Addenbrooke's Hospital

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Limited microbiology services impede adequate diagnosis and treatment of common infections such as pyelonephritis in resource-limited settings. Febrile pregnant women attending antenatal clinics at Shoklo Malaria Research Unit were offered urine dipstick, sediment microscopy, urine culture, and a 5-mL blood culture. The incidence of pyelonephritis was 11/1,000 deliveries (N = 53 in 4,819 pregnancies) between January 7, 2004 and May 17, 2006. Pyelonephritis accounted for 20.2% (41/203) of fever cases in pregnancy. Escherichia coli was the most commonly isolated pathogen: 87.5% (28/32) of organisms cultured. Susceptibility of E. coli to ampicillin (14%), cotrimoxazole (21%), and amoxicillin-clavulanic acid (48%) was very low. E. coli was susceptible to ceftriaxone and ciprofloxacin. The rate of extended spectrum β-lactamase (4.2%; 95% confidence interval = 0.7–19.5) was low. The rate and causes of pyelonephritis in pregnant refugee and migrant women were comparable with those described in developed countries. Diagnostic innovation in microbiology that permits affordable access is a high priority for resource-poor settings.

Author Notes

*Address correspondence to Rose McGready, Shoklo Malaria Research Unit, PO Box 46 Mae Sot, Tak 63110, Thailand. E-mail: SMRU@tropmedres.ac

Financial support: This study was funded by the Wellcome Trust, which is a United Kingdom-based medical research charity and is independent from all drug companies. It has no financial links with the manufacturers of either the diagnostic tests or the drugs used in this study.

Authors' addresses: Rose McGready, Saw Oo Tan, Mupawjay Pimanpanarak, Samuel Jacher Viladpai-nguen, Stephane Proux, and François Nosten, Shoklo Malaria Research Unit (SMRU), Tak, Thailand, E-mail: SMRU@tropmedres.ac. Vanaporn Wuthiekanun, Wilarat Jesadapanpong, Stuart D. Blacksell, Nicholas P. Day, Pratap Singhasivanon, and Nicholas J. White, Mahidol-Oxford Tropical Medicine Research Unit (MORU), Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand. Elizabeth A. Ashley, Department of Microbiology, Imperial College NHS Trust, London, United Kingdom. Sharon J. Peacock, Department of Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom.

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