Recommendations to enhance US surveillance for influenza A (H5N1)
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Recommendations to enhance US surveillance for influenza A (H5N1)

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    HAN ; 115
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    17:45 EST (5:45 PM EST) CDCHAN-00115-03-02-26-ADV-N As you are aware, two human cases of influenza A (H5N1) have been confirmed in a single family of Hong Kong residents who recently traveled to Fujian Province on mainland China. The first patient, a 9-year-old boy, was hospitalized in Hong Kong but is recovering. The second patient, the father of the 9-year-old boy, died in a Hong Kong hospital on February 17, 2003. Additional family members hadrespiratory symptoms, and the boy's 8-year-old sister died while the family was in China. The cause of her death and the other respiratory illnesses in her family is not known. There is currently insufficient information to determine whether this family was infected from a common source or whether illness spread within the family from person to person. In response to the reports of these 2 cases, CDC is issuing recommendations for enhanced influenza surveillance for state health departments. The purpose of these recommendations is to enhance the capacity to rapidly identify an importation of influenza A (H5N1) into the UnitedStates from Asia while maintaining effective public health response capacity. The enhancements will occur in a stepwise fashion based on the evolution of influenza A (H5N1) activity. Enclosed are recommendations for enhanced influenza surveillance activities that should be implemented immediately as well as activities that should be implemented if influenza A (H5N1) cases are identified outside Hong Kong or the Chinese mainland or evidence of efficient, sustained, person-to-person transmission is established. We will continue to provide you with updates on influenza A (H5N1) activity and will distribute recommendations on any additional surveillance activities that may become necessary. Includes: Recommendations to enhance surveillance for influenza A(H5N1), February 26, 2003.
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