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SYNOPSISIn regions to which T. marneffei infection is endemic, serologicsurveillance for patients receiving targeted therapymight be useful in the early diagnosis of T. marneffei infection,as in the case of AIDS patients (19). In non-endemicregions, such as the United States, clinicians should bevigilant of this infrequent infection in at-risk hematologypatients who have resided in or are returning from diseaseendemicareas.This study was partly supported by donations from the HuiHoy and Chow Sin Lan Charity Fund Limited; the Health andMedical Research Fund (ref. no. 13121342) and HKM-15-M07(commissioned study) of the Food and Health Bureau of HongKong Special Administrative Region Government; the StrategicResearch Theme Fund, The University of Hong Kong; and aCroucher Senior Medical Research Fellowship.Dr. Jasper F.W. Chan is a clinical assistant professor in theDepartment of Microbiology, The University of Hong Kong,Hong Kong, China. 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Woo, State Key Laboratoryof Emerging Infectious Diseases, Department of Microbiology, CarolYu Centre for Infection, The University of Hong Kong, UniversityPathology Bldg, Queen Mary Hospital Compound, Pokfulam Rd, HongKong, China; email: pcywoo@hku.hk1106 Emerging Infectious Diseases • www.cdc.gov/eid • Vol. 21, No. 7, July 2015