1) What type of disease transmission occurs when someone gets infected by touching a contaminated doorknob? a) Indirect transmission b) Direct transmission c) Airborne transmission d) Vector-borne transmission 2) Which of the following is an example of vector-borne transmission? a) Shaking hands with an infected person b) Breathing in droplets from a cough c) Getting bitten by a mosquito carrying malaria d) Eating contaminated food 3) What does the R₀ (basic reproduction number) of a disease represent? a) The amount of time before symptoms appear b) The number of people one infected person can spread the disease to c) The number of days an outbreak lasts d) The severity of disease symptoms 4) Which of the following is the first step in an outbreak investigation? a) Identify the source b) Test hypotheses c) Confirm the outbreak d) Describe the outbreak by time, place, and person 5) What type of surveillance involves health officials actively searching for cases? a) Passive surveillance b) B. Syndromic surveillance c) C. Sentinel surveillance d) D. Active surveillance

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