Measurement of AHR in children with A(H1N1)pdm09 infection
To elucidate whether AHR was enhanced in patients with A(H1N1)pdm09 infection, we measured AHR of 12 pediatric participants infected with A(H1N1)pdm09 at 1- and 3-months after discharge (Table 1 ). PC20 of all patients were lower than 8,000 µg/mL at 1month after discharge. PC20 significantly increased at 3 months after discharge compared to that at 1 month after discharge, suggesting that AHR was enhanced in the acute phase (1 month post discharge) of these patients (Fig. 1 ; 1 month after discharge vs. 3 months after discharge; 1,036 vs. 1,597 µg/mL, p = 0.009).