Despite a slow start to its COVID-19 vaccination efforts, Tanzania has made rapid progress in expanding its vaccination coverage in just four months, from 15 percent in June 2022 to 70 percent of the eligible population vaccinated as of September 29. With months to spare, the country has achieved the national goal of 70 percent of the eligible population (age 18 and up) vaccinated by the end of 2022. With over $30 million in funding through the U.S. government’s Initiative for Global Vaccine Access, or GlobalVAX, U.S. government agencies, in partnership with the Government of Tanzania (GoT), propelled efforts to vaccinate Tanzanians against COVID-19.