Mirkhamidova Sevara Mirmakhmudovna, Abrarul Haq, Ilyasova Munisa Mirvaliyevna, and Khudaykulova Gulnara Karimovna, “STRATEGIES FOR VACCINE DEVELOPMENT OF COVID-19 IN THE WORLD”, ijmscr, vol. 3, no. 03, pp. 5–19, Mar. 2023.