Vocabulary

• on earth: Used to emphasize a question expressing surprise or anger.
• know about: To have information or understanding of a subject or situation.
• along with: In addition to; together with.
• increased risk: A greater chance of something harmful or dangerous happening.
• common: Area in a city or town that is open to everyone
• spread: A big meal, often laid out as a buffet
• increase: To make or become larger in size or amount
• direct: To tell someone in a very clear way to do something
• contact: Touching or feeling something
• risk: To do something potentially dangerous or foolish
• outbreak: Sudden occurrence of illness, discontent etc.
• difficult: Hard; not easy; you need to work hard to do it
• death: When someone dies; the end of life
• virus: File secretly put on computers to cause harm
• fast: In a way that is difficult to move or change
• detect: To discover or identify the presence of something
• percent: One one-hundredth of a whole; the symbol %
• late: At a time after the expected time
• cold: Illness of sneezing, coughing, and a sore throat