The correct spelling of the word is "norovirus", /nɔːrəʊˈvaɪrəs/. "Norvo" is an incorrect spelling of the word as it misses out the second syllable. Phonetically, "norovirus" is pronounced as nawr-oh-vahy-ruhs. This highly contagious virus can cause vomiting, diarrhea, and stomach cramps, and can be spread through contaminated food or water, or by touching contaminated surfaces. It is important to practice good hand hygiene and food safety practices to prevent the transmission of norovirus.