Visiting a dengue fever vaccination site in Brazil: As soon as the vaccine was sold out, citizens rushed to kill mosquitoes. In late February, 521 cities across Brazil launched large-scale Dengue Fever vaccination campaigns.

Brazil reported 973,000 suspected cases, 195 confirmed deaths, and 672 deaths are under investigation. Japan's Takeda Pharmaceutical announced on February 27 that it will reach the goal of delivering 100 million doses by 2030 through cooperation with the Indian Bio-E. coli Laboratory.