Pandemic H1N1 2009

共享题干题【2011年真题】（一） Pandemic (大面积流行的) H1N1 2009.The most active areas of pandemic influenza transmission currently are in central and eastern Europe. Focal(集中的) increases in rates during recent weeks were ______(51) in at least two eastern European countries. A high intensity of respiratory(呼吸道) diseases activity with concurrent(同时存在的) circulation of pandemic influenza still ______ (52) in parts of southern and eastern Europe, ______(53) in Greece, Poland, and Ukraine. In Western Europe, influenza transmission remains ______(54) active and widespread, but overall disease activity has peaked. All influenza viruses in Western Europe were pandemic H1N1 2009, ______(55), very small numbers of seasonal influenza viruses, covering less than 1% of all influenza viruses found, were reported in Russia. In ______(56), limited available data indicate that active, high intensity transmission is occurring in Northern African countries ______(57) the Mediterranean coast. In Central Asia, limited data ______(58) that influenza virus circulation remains active, but transmission may have recently peaked in some places. In West Asia, Israel, Iran, and Iraq also appear to have passed their ______(59) period of transmission within the past month, though both areas continue to have some active transmission and levels of respiratory disease activity have not yet ______(60) to baseline levels. In East Asia, influenza transmission remains active but appears to be ______(61) overall. Slight increases in ILI were reported in Mongolia after weeks of declining activity following a large peak of activity ______(62) one month ago. In North America, influenza transmission ______(63) widespread but has declined quickly in all countries. In the tropical regions of Central and South America and the Caribbean, influenza transmission remains geographically widespread but overall disease ______(64) has been declining or remains unchanged in most parts, ______(65) for focal increases in respiratory disease activity in a few countries.