

インフルエンザで学校を休みました。
インフルエンザの薬はありますか。
今、インフルエンザが多いですね。
"インフルエンザ" is in the lesson "Treatment" (Level 13), along with 13 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.