Chandran P, Lilabi MP, Bina T, Thavody J, George S. Re-emergence of diphtheria in Kerala: the need for change in vaccination policy. Int J Community Med Public Health [Internet]. 2019 Jan. 24 [cited 2025 Oct. 27];6(2):829-35. Available from: https://www.ijcmph.com/index.php/ijcmph/article/view/4168