This is a huge buy opportunity! From their earnings release:

..."We are hopeful that the adverse effects on our business from the fear of H1N1 will gradually subside as the H1N1 flu vaccine has been made available in China this month and will become widely available across the country with over 60 million doses planned in the months ahead. Our strong financial results in the face of these challenging external factors underline the strength of the New Oriental brand and the important role we play in the lives of Chinese students."