U., Anuja, Rajasi R. S., Ratheesh K. H., VijayaKumar K., and Amar Fettil. 2017. “Seroconversion Following H1N1 Influenza Vaccination Among Health Care Personnel in South Kerala, India”. International Journal Of Community Medicine And Public Health 4 (2):428-32. https://doi.org/10.18203/2394-6040.ijcmph20170267.