For some diseases, one of the most effective measures for prevention and control is tracing people who have been in contact with infected people.
For which disease would tracing the contacts of infected people help in its prevention and control?
1 )
Cholera, as it can be treated successfully with carefully selected antibiotics.
2 )
Malaria, as it is transmitted by animals, so the transmission cycle of the pathogen can be broken.
Measles, as it can cause an epidemic and can be controlled by other methods.
4 )
Sickle cell anaemia, as it is genetically inherited, so there is time to act before more individuals are affected.
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