The answer to each question part requires no more than a few sentences. The course of infection of a pathogen is affected by different variables and can be modelled using the basic reproduction number R0. (c) Table 1 reports four variables for three different pathogens. Examine the table and answer the questions below. Table 1 Four variables for three different pathogens Pathogen A Pathogen B Pathogen C Latent period 3 days 5 days 6 days Infectious period 3-4 days Up to 3 years 10 days Incubation period 7 days 5 days 6 days Infectious dose >1000 10 50-100 (i) Which pathogen will be transmitted undetected if we use a surveillance system solely based on symptoms, and why? (ii) Which pathogen will be best controlled by making sure the people affected are identified and treated, and why? (iii) Which pathogen will be more difficult to control if it contaminates a fomite, such as a doorknob, and why