Argentina extended a national vaccination campaign against measles, mumps, rubella, and polio through March 31 due to low uptake. The campaign—which started on October 1 and was expected to end November 13 (but was initially extended until December 11)—is targeting 2.3 million children ages 13 months to 4 years, aiming to boost national coverage rates, which declined due to Covid-19. The government is requiring all students to show proof of vaccination in the 2023 school year. Argentina MoH; UNICEF