Although acute-phase serum from the patients reported here was almost always collected at the time of admission and those who had symptoms >7 days before admission were excluded from enrollment, for some, a rapid, anamnestic response could have developed before admission.
Paired, 2-week convalescent serum specimens are being obtained for the 18 patients (these 16 patients and the first two patients) whose acute-phase serum specimens (three positive and 15 negative) have been tested.
([double dagger]) Acute-phase serum samples from AFI patients were systematically tested for dengue by nonstructural protein 1 ELISA and IgM ELISA; convalescent-phase serum samples were also tested by IgM ELISA.
To determine whether humans were infected with WNV, we obtained acute-phase serum samples within 1-7 days of onset of illness from persons visiting an outpatient clinic in Kashi during June 11-August 25, 2011.
Acute-phase serum samples, clinical information, and laboratory data for all patients given a diagnosis of SFTS in 2011 in Yiyuan County were submitted to the Yiyuan County Centers for Disease Control and Prevention.