Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: (CNN) -- A new virus in the same family as SARS -- found for the first time in humans in the past year -- has infected 49 people, most of them in the Middle East. Of those, 27 people have died, the World Health Organization said Wednesday. The virus previously was called the novel coronavirus, or nCoV. However, the WHO this week gave it a new name: Middle East respiratory syndrome coronavirus, or MERS-CoV. Should I be concerned about new virus? Your questions answered It's part of a family called coronaviruses, which cause illnesses ranging from the common cold to SARS, or severe acute respiratory syndrome, as well as a variety of animal diseases. However, the new virus is not SARS.MERS-CoV has sickened 49 people and killed 27, World Health Organization saysThe cases have a link to the Middle East, especially Saudi ArabiaExperts say the virus could show up in the United States 
 Question:That means it's not yet known how humans contract _.

nCoV