Numerical-Based Tricks

1. Malaria:

• Determine how many times more likely a person is to be infected with malaria if bitten by an infected female Anopheles mosquito compared to a non-infected mosquito using the number of sporozoites injected.

2. Typhoid:

• Calculate how many times the incubation period of typhoid is greater than that of malaria.

3. Cholera:

• Determine the ratio of sodium chloride (NaCl) in the ORT solutions for typhoid and cholera.

4. Dengue:

• If a person becomes infective to mosquitoes 2 days after getting fever, how many days of the infective period remain before the incubation period ends?

5. Chikungunya:

• Calculate the difference between the maximum duration of symptoms and the number of days a person remains infective to mosquitoes after getting fever.

6. Tuberculosis:

• Find the minimum number of Mycobacterium tuberculosis bacteria required to cause infection and express it as a percentage of the maximum number.

7. HIV/AIDS:

• Calculate the percentage of infected people who do not develop AIDS within 10 years of infection.

8. Cancer:

• Determine the difference in the five-year and ten-year survival rates for all cancers combined in the United States.

9. Diabetes:

• Compare the onset ages for diabetes type 1 and type 2.

10. COVID-19:

• Multiply the estimated R0 value by the incubation period range to estimate the total range of secondary infections caused by one infected person during their infective period.