◆ H1N1新型流感疫情台灣分級警示：● 黃燈，第四級 ( 社區流行，但控制中 )

美國CDC 5/11 宣布，目前該國計有44州出現2,600例確定病例，包含3例死亡病例。各州累計確定病例分別為：Alabama(4), Arizona(182), California(191), Colorado(39), Connecticut(24), Delaware(44), Florida(54), Georgia(3), Hawaii(6), Idaho(1), Illinois(487), Indiana(39), Iowa(43), Kansas(18), Kentucky(10), Louisiana(9), Maine(4), Maryland(23), Massachusetts(88), Michigan(130), Minnesota(7), Missouri(14), Nebraska(13), Nevada(9), New Hampshire(4), New Jersey(7), New Mexico(30), New York(190), North Carolina(11), Ohio(6), Oklahoma(14), Oregon(17), Pennsylvania(10), Rhode Island(7), South Carolina(32), South Dakota(1), Tennessee(54), Texas(179, 2例死亡), Utah(63), Vermont(1), Virginia(16), Washington(128, 1例死亡), Washington, D.C.(4), Wisconsin(384)。