300,000 60,000 250,000 50,000 40,000 200,000 30,000 DTP 20,000 150,000 10,000 1990 1995 2000 2005 2013 100,000 Tdap 50,000 DTAP 1922 1930 1940 1950 1960 1970 1980 1990 2000 201 Year 140 <1 yr 1-6 yr 7-10 yr 11-19 yr 20+ yr 120 100 80 60 40 20 1990 1995 2000 2005 2013 Year Number of cases
The following graphs illustrate the incidence of pertussis (whooping cough) cases in the United States. The first graph organizes the data by year from 1922 to 2012, with the inset showing The following graphs illustrate the incidence of pertussis (whooping cough) cases in the United States. The first graph organizes the data by year from 1922 to 2012, with the inset showing a. Describe what the first graph shows. What do each of the axes represent? What does any point on the line show? What general trend is seen, if all the data shown in the graph are considered? b. Why do you think there was an increase in cases of pertussis in the first decade of the twenty-first century? c. Describe what the second graph shows. What do each of the axes represent? What does any point on each of the different lines show? What general trend is seen, if all the lines are considered? What differs among the lines? d. Compare the incidence of pertussis cases in children under 1 year old and people over the age of 20. e. Summarize your reflections on reviewing these graphs and the relative risks of pertussis and the pertussis vaccine. What would you recommend to someone trying to decide whether to vaccinate a child?
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