Consider the following statements. I. People should get vaccination to avoid infection. II. Vacc...

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Consider the following statements.
I. People should get vaccination to avoid infection.
II. Vaccination is available against polio, cholera, typhoid, tuberculosis and many other diseases.
III. Eradication of vectors are necessary in diseases like malaria and filariasis.
IV. Dengue and chikungunya, both are spread by Culex mosquitoes.

Which of the statements given above are correct?
(a) I, II and III
(b) I, II and IV
(c) I, III and IV
(d) III and IV
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